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3-溴-1,1,1-三氟-2-丙醇辅助CO2与烯丙基缩水甘油醚偶联反应
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作者 马辉 谷玉杰 +3 位作者 王博 赵波 毛伟 吕剑 《精细化工》 EI CAS CSCD 北大核心 2018年第6期1072-1076,共5页
以烯丙基缩水甘油醚(AGE)、CO2为原料,以3-溴-1,1,1-三氟-2-丙醇(BTFP)为活化剂,以四丁基溴化铵(TBAB)为有机分子催化剂,经偶联反应合成4-烯丙氧甲基-1,3-二氧环戊-2-酮(AGC)。对四丁基季铵盐和活化剂种类进行了筛选,考察了反... 以烯丙基缩水甘油醚(AGE)、CO2为原料,以3-溴-1,1,1-三氟-2-丙醇(BTFP)为活化剂,以四丁基溴化铵(TBAB)为有机分子催化剂,经偶联反应合成4-烯丙氧甲基-1,3-二氧环戊-2-酮(AGC)。对四丁基季铵盐和活化剂种类进行了筛选,考察了反应温度、活化剂BTFP与催化剂TBAB用量、反应压力、反应时间对产物收率的影响,并提出了可能的反应机理。采用GC-MS、FTIR、NMR对目标产物进行了表征。结果表明:BTFP用量为AGE物质的量的2.0%,TBAB用量为AGE物质的量的2.0%,无需任何反应溶剂,在90℃、0.5 MPa CO2压力下反应18 h,AGC收率可达96.5%。 展开更多
关键词 3-溴-1 1 1-三氟-2-丙醇 二氧化碳 烯丙基缩水甘油醚 4-烯丙氧甲基-1 3-二氧环戊-2-酮 偶联反应 精细化工中间体
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Preparation of 1-trifluoroacetyl Indolizines and their derivatives via the cycloaddition of pyridinium N-ylides with 4-ethoxy-1,1,1-trifluoro-3-butene-2-one
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《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 1999年第S1期243-243,共1页
关键词 Preparation of 1-trifluoroacetyl Indolizines and their derivatives via the cycloaddition of pyridinium N-ylides with 4-ethoxy-1 1 1-trifluoro-3-butene-2-one
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(Z)-ETHYL 3-BROMO-4,4,4-TRIFLUORO-2-BUTENOATE AS A NOVEL CF_3-CONTAINING BUILDING BLOCK: Its Preparation and Pd-Catalysed Reaction with Alkynes and Organozinc Reagents
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作者 Wei Yuan HUANG, Long Lǔ Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第10期769-772,共4页
A novel CF_3-containing building block, (Z)-ethyl 3-bromo-4,4,4-trifluoro-2-butenoate, was easily prepared from CF_3CBr_3, the former reacted with alkynes Or organozinc reagents in the presence of Pd complexes to affo... A novel CF_3-containing building block, (Z)-ethyl 3-bromo-4,4,4-trifluoro-2-butenoate, was easily prepared from CF_3CBr_3, the former reacted with alkynes Or organozinc reagents in the presence of Pd complexes to afford useful CF_3-containing intermediates in good yield. 展开更多
关键词 CF Br ETHYL 3-bromo-4 4 4-trifluoro-2-BUTENOATE AS A NOVEL CF3-CONTAINING BUILDING BLOCK Its Preparation and Pd-Catalysed Reaction with Alkynes and Organozinc Reagents PD AS
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