SYNTHESES AND PROPERTIES OF α- OR β-METHYL SUBSTITUTED BISDEHYDROAZA[14]-, AZA[16]-, AND AZA[18]ANNULENE
作者:Juro Ojima、Yasuhiro Yagi、Tetsuya Nakada、Sumio Manaka、Emiko Ejiri、Shuichi Ishizaka、Yasunao Shiraiwa
DOI:10.1246/cl.1985.1767
日期:1985.11.5
14-Ethoxy-2,5,10-trimethyl-, 14-ethoxy-2-ethyl-5,10-dimethyl-6,8-bisdehydroaza[14]annulene, 2-ethoxy-3,6,11-trimethyl-, 2-ethoxy-6,11,16-trimethyl- 7,9-bisdehydroaza [16] annulene, and 18-ethoxy-2,7,12-trimethyl-8,10-bisdehydroaza[18]annulene were prepared. It was found that the molecular skeletons of these α- or β-methylated azaannulenes are less planar than those of α- or β-methyl unsubstituted ones
14-乙氧基-2,5,10-三甲基-, 14-乙氧基-2-乙基-5,10-二甲基-6,8-双脱氢氮杂[14]环烯, 2-乙氧基-3,6,11-三甲基-,制备了2-乙氧基-6,11,16-三甲基-7,9-双脱氢氮杂[16]环烯和18-乙氧基-2,7,12-三甲基-8,10-双脱氢氮杂[18]环烯。发现这些α-或β-甲基化氮杂环烯的分子骨架不如α-或β-甲基未取代的分子骨架平面化。