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FILE REGISTRY ? E 5-CHLOROBENZOTRIAZOLE/CN E1 1 5-CHLOROBENZOTHIOPHENE-2-CARBOXALDEHYDE/CN E2 1 5-CHLOROBENZOTHIOPHENE-2-METHANOL/CN E3 1 --> 5-CHLOROBENZOTRIAZOLE/CN E4 1 5-CHLOROBENZOXAZOLE/CN E5 1 5-CHLOROBENZOXAZOLE-2-CARBOXALDEHYDE/CN E6 1 5-CHLOROBENZOXAZOLIDONE/CN E7 1 5-CHLOROBENZOXAZOLONE/CN E8 1 5-CHLOROBICYCLO(2.2.1)HEPT-2-ENE/CN E9 1 5-CHLOROBICYCLO(2.2.1)HEPT-2-ENE POLYMER/CN E10 1 5-CHLOROBICYCLO(3.2.0)HEPT-2-ENE/CN E11 1 5-CHLOROBIS(1,5-CYCLOOCTADIENE)DIIRIDIUM/CN E12 1 5-CHLOROCALICENE/CN => S E3 L1 1 5-CHLOROBENZOTRIAZOLE/CN ? FILE CAPLUS ? S L1/P L2 11 L1/P => S L2 AND P/DT 2394686 P/DT L3 5 L2 AND P/DT => D L3 BIB ABS 1 L3 ANSWER 1 OF 5 CAPLUS COPYRIGHT 1998 ACS AN 1989:457739 CAPLUS DN 111:57739 TI Preparation of benzotriazoles by catalytic dehydroxylation of 1-hydroxybenzotriazoles IN Hayashi, Hiroyasu; Maekawa, Tsukasa PA Otsuka Chemical Co., Ltd., Japan SO Jpn. Kokai Tokkyo Koho, 6 pp. CODEN: JKXXAF PI JP 01019073 A2 19890123 Heisei AI JP 87-175406 19870714 DT Patent LA Japanese AB Benzotriazoles I (R = H; R1 - R4 = H, halo, stable group in reaction solvents) (II) free of byproduct amines as colored matters, useful as anticorrosives and stabilizers for polymers (no data) are prepd. in high yields by treatment of 1-hydroxybenzotriazoles I (R = OH) (III) or their salts with Pb (compds.) in acidic medium optionally in the presence of metals, whose ionization tendency are larger than Pb. A mixt. of 1-hydroxybenzotriazole, Pb, Al, and H2O was stirred at 100.degree. under dropwise addn. of an aq. HCl soln. over 2 h, the reaction mixt. was further stirred for 5 h to give 99% benzotriazole, vs. 64% for a control without addn. of Pb. ËÄ¡¢ ÀûÓû¯Ñ§·Ö×ÓʽÀ´¼ìË÷×ÊÁÏ ¿ÉÒÔÀûÓ÷Ö×ÓʽÀ´¼ìË÷»¯ºÏÎï×ÊÁϵÄÊý¾Ý¿â²¢²»¶à£¬µ«REGISRTY FILE¿ÉÒÔÒԺܼòµ¥µÄ²½ÖèÀ´Íê³É×ÊÁϵÄÊÕ¼¯¡£ÆäÖÐËù¼ìË÷µÄ·Ö×ÓʽÅÅÁÐÐè·ûºÏHill System OrderµÄÒªÇó£¬ÕâÀïÏÈÀ´½éÉÜHill System OrderµÄ¹æÔò£º I. 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(1):1 L1 3 ANSWERS REGISTRY COPYRIGHT 1998 ACS IN Thiophene, 2,4-dibromo-3,5-dinitro- (7CI) MF ***C4 Br2 N2 O4 S*** HOW MANY MORE ANSWERS DO YOU WISH TO SCAN? 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