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blessyy

金虫 (小有名气)
哦
看错了
不过你说的那种在我们这里的数据库里大体上是没有的
不好意思阿
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11楼2007-06-20 23:15:26
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zyy816

至尊木虫 (著名写手)
多了，随便来几个给你
Bibliographic Information

Alkylation of Phenols and Naphthols on Silica-Immobilized Triflate Derivatives.     Gagea, Bogdan C.; Parvulescu, Andrei N.; Parvulescu, Vasile I.; Auroux, Aline; Grange, Paul; Poncelet, Georges.    Department of Chemical Technology and Catalysis,  University of Bucharest,  Bucharest,  Rom.    Catalysis Letters  (2003),  91(1-2),  141-144.  Publisher: Kluwer Academic/Plenum Publishers,  CODEN: CALEER  ISSN: 1011-372X.  Journal  written in English.    CAN 140:201418    AN 2003:941440    CAPLUS  

Abstract

Immobilized triflate derivs. (La(OTf)3, AgOTf, tert-butyldimethylsilyltrifluoro-methanesulfonate), and triflic acid were found to be effective in the alkylation of phenol and naphthols with tert-butanol.  The acidic strength and type of acidity (Lewis or Bronsted) are key factors controlling the conversion and product distribution.  

Indexing -- Section 45-4  (Industrial Organic Chemicals, Leather, Fats, and Waxes)  
Section cross-reference(s): 67
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12楼2007-06-21 00:03:34
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zyy816

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Bibliographic Information

Alkylation of Phenols and Naphthols on Silica-Immobilized Triflate Derivatives.     Gagea, Bogdan C.; Parvulescu, Andrei N.; Parvulescu, Vasile I.; Auroux, Aline; Grange, Paul; Poncelet, Georges.    Department of Chemical Technology and Catalysis,  University of Bucharest,  Bucharest,  Rom.    Catalysis Letters  (2003),  91(1-2),  141-144.  Publisher: Kluwer Academic/Plenum Publishers,  CODEN: CALEER  ISSN: 1011-372X.  Journal  written in English.    CAN 140:201418    AN 2003:941440    CAPLUS  

Abstract

Immobilized triflate derivs. (La(OTf)3, AgOTf, tert-butyldimethylsilyltrifluoro-methanesulfonate), and triflic acid were found to be effective in the alkylation of phenol and naphthols with tert-butanol.  The acidic strength and type of acidity (Lewis or Bronsted) are key factors controlling the conversion and product distribution.
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13楼2007-06-21 00:04:22
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zyy816

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Bibliographic Information

Alkylation of Phenols and Naphthols on Silica-Immobilized Triflate Derivatives.     Gagea, Bogdan C.; Parvulescu, Andrei N.; Parvulescu, Vasile I.; Auroux, Aline; Grange, Paul; Poncelet, Georges.    Department of Chemical Technology and Catalysis,  University of Bucharest,  Bucharest,  Rom.    Catalysis Letters  (2003),  91(1-2),  141-144.  Publisher: Kluwer Academic/Plenum Publishers,  CODEN: CALEER  ISSN: 1011-372X.  Journal  written in English.    CAN 140:201418    AN 2003:941440    CAPLUS  

Abstract

Immobilized triflate derivs. (La(OTf)3, AgOTf, tert-butyldimethylsilyltrifluoro-methanesulfonate), and triflic acid were found to be effective in the alkylation of phenol and naphthols with tert-butanol.  The acidic strength and type of acidity (Lewis or Bronsted) are key factors controlling the conversion and product distribution.
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14楼2007-06-21 00:05:45
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zyy816

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Characterization of Co,Al-MCM-41 and its activity in the t-butylation of phenol using isobutanol.     Karthik, M.; Tripathi, A. K.; Gupta, N. M.; Vinu, A.; Hartmann, M.; Palanichamy, M.; Murugesan, V.    Department of Chemistry, Faculty of Science and Humanities,  Anna University,  Chennai,  India.    Applied Catalysis, A: General  (2004),  268(1-2),  139-149.  Publisher: Elsevier Science B.V.,  CODEN: ACAGE4  ISSN: 0926-860X.  Journal  written in English.    CAN 141:158906    AN 2004:461160    CAPLUS  

Abstract

Co,Al-MCM-41 catalysts with various nSi/(nCo + nAl) ratios were synthesized and extensively characterized by low-angle XRD, TGA/DTG, BET, AAS, DRIFT, UV-Vis DRS and ESR.  UV-Vis DRS and ESR studies reveal that cobalt in Co,Al-MCM-41 is highly sym. and occurs in tetrahedral coordination.  Some of the cobalt atoms are transformed into the cobalt oxide form when nSi/(nCo + nAl) is increased to 20.  T-Butylation of phenol with isobutanol was studied in the vapor phase as a model reaction at temps. between 200 and 500癈.  The products obtained were O-tert-Bu phenol (OTBP), 2-tert-Bu phenol (2TBP) and 4-tert Bu phenol (4TBP).  O-Butenyl phenol (OBP) and 2-butenyl phenol (2BP) were also obsd. along with normal alkylated products.  The phenol conversion drastically increased with temp. over all the catalysts.  The activity of the catalysts followed the order of Co,Al-MCM-41 (20) > Co,Al-MCM-41 (50) > Co,Al-MCM-41 (80) > Al-MCM-41 (23).  The influences of various parameters such as temp., reactant feed ratio and feed rate, time on stream on conversion and products selectivity were studied and the salient results are discussed.
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15楼2007-06-21 00:07:34
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zyy816

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Bibliographic Information

Air stable, sterically hindered ferrocenyl dialkylphosphines for palladium-catalyzed C-C, C-N, and C-O bond-forming cross-couplings.     Kataoka, Noriyasu; Shelby, Quinetta; Stambuli, James P.; Hartwig, John F.    Dep. Chem.,  Yale Univ.,  New Haven,  CT,  USA.    Journal of Organic Chemistry  (2002),  67(16),  5553-5566.  Publisher: American Chemical Society,  CODEN: JOCEAH  ISSN: 0022-3263.  Journal  written in English.    CAN 137:217039    AN 2002:509541    CAPLUS  

Abstract

Pentaphenylferrocenyl di-tert-butylphosphine I (R = R1 = Ph) was prepd.; the scope of various cross-coupling processes catalyzed by palladium complexes of I has been investigated.  I (R = R1 = Ph) was prepd. by lithiation of ferrocene followed by removal of solvent, addn. of a 5:1 pentane:THF mixt., and addn. of di(tert-butyl)chlorophosphine to give mono(di-tert-butylphosphino)ferrocene with high chemoselectivity; arylation of the ferrocenylphosphine with chlorobenzene as a solvent in the presence of palladium (II) acetate and sodium tert-butoxide yielded I in 40-65% yield overall.  I (R = R1 = Ph) acts as a highly effective ligand for palladium-catalyzed amination and for Suzuki coupling reactions with aryl- and alkylboronic acids.  Unactivated, electron-rich, and electron-poor aryl bromides and chlorides undergo coupling reactions in the presence of palladium complexes of I (R = R1 = Ph) with high turnover nos.  Aryl bromides were coupled to alcs. in the presence of I (R = R1 = Ph); silanols and electron-rich phenols were coupled to activated aryl halides in the presence of I (R = R1 = Ph).  Intramol. coupling reactions of alcs. and aryl bromides were successful, although substrates with hydrogens a to the alc. oxygen underwent some b-hydride elimination.  Acyclic and cyclic primary and secondary alkyl- and arylamines underwent coupling reactions with aryl bromides and chlorides in the presence of I (R = R1 = Ph).  Aryl- and primary alkylboronic acids underwent coupling reactions in the presence of I (R = R1 = Ph); coupling of alkylboronic acids with aryl halides was successful in the absence of toxic or expensive bases.  Other substituted ferrocenylphosphines I (R = R1 = 4-MeOC6H4, 4-F3CC6H4) were prepd. but palladium catalysts derived from the ligands showed little difference in catalytic activity when compared to palladium catalysts derived from I (R = R1 = Ph).  Palladium catalysts derived from I (R = R1 = 3,5-Me2C6H3) were active in coupling reactions with aryl halides and alcs.
but not in amination or Suzuki coupling reactions; I (R = Ph; R1 = H) acted as a catalyst for coupling reactions but gave significantly decreased yields due to decreased steric hindrance of the reaction center in the palladium complexes.  I (R = R1 = Ph) not only generates highly active palladium catalysts, but is also air stable both in soln. and in the solid state.  Palladium(0) complexes of I (R = R1 = Ph) are air stable solids and react only slowly with oxygen in soln.  The crystal structures of I(R = R1 = Ph; R = Ph, R1 = H) were detd. by x-ray crystallog.  
_
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16楼2007-06-21 00:08:38
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风声

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17楼2007-06-21 00:12:55
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zyy816

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Bibliographic Information

Effect of solvent on rate of base-catalyzed proton abstraction from carbon.     Cram, Donald J.; Rickborn, Bruce; Knox, Graham R.    Univ. of California,  Los Angeles,    Journal of the American Chemical Society  (1960),  82  6412-13.  CODEN: JACSAT  ISSN: 0002-7863.  Journal  language unavailable.    CAN 56:30969    AN 1962:30969    CAPLUS  

Abstract

cf. CA 54,4471d.  Racemization of 2-methyl-3-phenylpropionitrile (I) in mixts. of MeOH and Me2SO with a metal methoxide as base was described.  Rates in 76.5% and higher Me2SO were obtained by direct polarimetric measurement, at lower concn. by the ampul technique, and the rate consts. extrapolated to 25?  Relative rates of racemization of I were given [solvent system (% by weight), base, and relative rate (25? given]: 100 MeOH-O Me2SO, MeOM (M = Li, Na, K), 1; 75 MeOH-25Me2SO, MeONa, 32; 49.6 MeOH-50.4 Me2SO, MeONa, 160; 23.5 MeOH-76.5 Me2SO, MeOLi, 4900; 10 MeOH-90 Me2SO, MeOM, 1.3 ?105; 3 MeOH-97 Me2SO, MeOM, 1.4 ?106; 1.5 MeOH-98.5 Me2SO, MeOK, .apprx.1.05 ?107, 0 MeOH-100 Me2SO, MeOK, ?09 (estd.); and 100 Me3COH, Me3COK, 4.1 ?106.  Rates of racemization of optically active PhCHMeOMe in Me2SO at 49?and 75?and in Me3COH at 173?were measured, and the rate in Me2SO extrapolated to 173?gave a value >106 greater than in Me3COH.  Preliminary expts. indicated that (CH2)4SO also enhanced the catalytic activity of alkoxide ions, but less than Me2SO.  Substitution of Me2SO for the usual hydroxylic solvents with Me3COK gave 86% conversion of PhBr to PhOCMe3 (II) at 25?(15 hrs.) and 35% yield in Me3COH at 175?(9 hrs.).  PhF in Me2SO also gave II, but at 1/25 the rate.  Me2SO at 100?converted o-MeC6H4F to o-MeC6H4OH (<3% meta), and o-MeC6H4Br to a 4:1 mixt. of m- and o-MeC6H4OH.  Presumably, aryl bromides gave aryne intermediates, which added Me3COH to give aryl ethers as initial products, converted to the resp. phenol during vapor phase analysis of the products.  Aryl fluorides underwent direct substitution
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18楼2007-06-21 00:13:59
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zyy816

至尊木虫 (著名写手)
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
风声(金币+10):能给出它的结构式嘛？
风声(金币+20):谢谢你的帮忙，能帮我下载几篇文献嘛，文献里面有我要的结构的物质。谢谢。
你自己看了，我CA上查的，有CA号码


Registry Number:         6669-13-2
_

Formula:         C10 H14 O

CA Index Name:         Benzene, (1,1-dimethylethoxy)-

Other Names:         Ether, tert-butyl phenyl (6CI,7CI,8CI); 1,1-Dimethylethyl phenyl ether; NSC 78717; Phenyl tert-butyl ether; tert-Butoxybenzene; tert-Butyl phenyl ether

Experimental Properties
Calculated Properties

-- Resources --

References:         ~178

STN Files:         CAPLUS, BEILSTEIN, CA, CAOLD, CASREACT, CHEMCATS, CSCHEM, DETHERM, IFICDB, IFIPAT, IFIUDB, SPECINFO, TOXCENTER, USPAT2, USPATFULL

(Additional Information is available through STN International.  Contact your information specialist, a local CAS representative, or the CAS Help Desk for Assistance)

Database:         REGISTRY
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19楼2007-06-21 00:17:44
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风声

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20楼2007-06-21 00:25:57
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