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sun2002guoqing金虫 (正式写手)
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3-溴丙烷-1,1,1-三羧酸乙酯的熔点和沸点截止3月15日
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3-溴丙烷-1,1,1-三羧酸乙酯的熔点和沸点 [ Last edited by sun2002guoqing on 2009-3-6 at 15:05 ] |
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2楼2009-03-06 15:06:23
sun2002guoqing
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3楼2009-03-06 16:06:58
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Copyright (c) 1998 American Chemical Society All Rights Reserved. 127:33875 Process for the preparation of triethyl 3-bromopropane-1,1,1-tricarboxylate. Gledhill, Paul Adrian; Pardue, Marc Vincent; Cottrell, Timothy; Clarke, Paul Derek; Radley, Peter Michael (The Associated Octel Company Limited, UK). Eur. Pat. Appl. EP 779267 A1 18 Jun 1997, 5 pp. DESIGNATED STATES: R: AT, BE, CH, DE, DK, ES, FR, GB, IE, IT, LI, NL, PT, SE. (European Patent Organization). CODEN: EPXXDW. CLASS: ICM: C07C067-343. ICS: C07C069-63. APPLICATION: EP 96-309026 11 Dec 1996. PRIORITY: GB 95-25398 12 Dec 1995. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) The present invention relates to a process for the prepn. of tri-Et 3-bromopropane-1,1,1-tricarboxylate (TBTC) from tri-Et methanetricarboxylate and 1,2-dibromoethane; the reaction is carried out in the presence of an inorg. base and in a solvent medium consisting preferably of a mixt. of two or more solvents, one of them being preferably DMF. To a mixt. of 400 mL THF and 165 g potassium carbonate at 50° was added 1 g triethylbenzylammonium chloride and then 232 g tri-Et methanetricarboxylate. After 1 h, 436 g of 1,2-dibromoethane was added. The mixt. was held at 60° for 1 h and then heated to 70 to 75° for 20 h. The reaction mixt. was worked up to give 338 g oil contg. 306 g TBTC (90.6% yield). Keywords bromopropanetricarboxylate prepn high yield Index Entries 71170-82-6 106-93-4 584-08-7 6279-86-3 process for the prepn. of tri-Et bromopropanetricarboxylate 68-12-2, uses 109-99-9, uses 141-78-6, reactions 1634-04-4 solvent; process for the prepn. of tri-Et bromopropanetricarboxylate 你可以自己做一下不就出来了，网上数据库查了，没查出来 |
4楼2009-03-06 16:38:55
sun2002guoqing
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5楼2009-03-06 16:42:50
wjy82
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sun2002guoqing(金币+2,VIP+0):谢谢 3-12 17:07
sun2002guoqing(金币+2,VIP+0):谢谢 3-12 17:07
从下面这个信息来看，熔点是53-56度，但是沸点…… Sell Triethyl 3-bromopropane-1,1,1-tricarboxylate [Hangzhou Joye Pharmaceutical Co, Ltd] 의약,건강,환경 > 의약원료 > 의약화학원료 국가 : 중국 등록일자 : 2008-01-23 유효기간 : 2008-07-21 MW 339.18 CAS No. 71170-82-6 Appearance: Light yellow liquid Purity (GC)： ≥ 90% Melting point: 53-56°C Water (KF): max... |
6楼2009-03-07 09:01:06
