期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Synthesis and Crystal Structure of 4-Bromo-5-ethoxy-3-methyl-5- (naphthalen-1-yl)-1-tosyl-1H-pyrrol-2(5H)-one
1
作者 沈如伟 杨誉竹 +2 位作者 曹剑 吴露玲 黄宪 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第12期1505-1508,共4页
The title compound 4-bromo-5-ethoxy-3-methyl-5-(naphthalen-l-yl)-l-tosyl-lH- pyrrol-2(5H)-one 1 (C24H22BrNO4S, Mr = 500.40) has been synthesized and its crystal structure was determined by single-crystal X-ray d... The title compound 4-bromo-5-ethoxy-3-methyl-5-(naphthalen-l-yl)-l-tosyl-lH- pyrrol-2(5H)-one 1 (C24H22BrNO4S, Mr = 500.40) has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic, space group P21/n with a = 8.8562(15), b = 18.118(3), c = 14.055(2)A, β = 99.855(3)^o, V= 2221.9(6)A3, Z = 4, Dc = 1.496 g/cm^3,μ= 1.975 mm^-1, 2 = 0.71073A, F(000) = 1024, R = 0.0607 and wR = 0.1371. 展开更多
关键词 4-bromo-5-ethoxy-3-methyl-5-(naphthalen-1-y1)-1-tosyl-1H-pyrrol-2(5H)-one synthesis crystal structure
下载PDF
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
2
《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
下载PDF
A simple and expedient method for the stepwise synthesis of 2-ethoxy-(4H)-3,1-benzoxazine-4-ones
3
作者 Asrin Bahmani Mahnaz Sharafi-Kolkeshvandi Farzad Nikpour 《Chinese Chemical Letters》 SCIE CAS CSCD 2012年第4期434-437,共4页
A simple and practical route is described for the synthesis of 2-efhoxy-(4H)-3,1 -benzoxazine-4-ones using the coupling reaction of anthranilic acid derivatives with diethyl dicarbonate following with fast cyclizati... A simple and practical route is described for the synthesis of 2-efhoxy-(4H)-3,1 -benzoxazine-4-ones using the coupling reaction of anthranilic acid derivatives with diethyl dicarbonate following with fast cyclization of the carbamate adduct with a dehydrocyclization agent such as cyanuric chloride and N,N′-dicyclohexylcarbodiimide in PEG at room temperature.High yields of the products obtained under mild reaction conditions with simple work-up of the reaction mixture. 展开更多
关键词 2-ethoxy-4H)-3 l-benzoxazine-4-ones Diethyl dicarbonate Cyanuric chloride N N′-Dicyclohexylcarbodiimide Dehydrocyclization reagent
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部