Syntheses and properties of trimethyltetradehydro[15]annulenones and the benzannelated derivatives
作者:J?ro Ojima、Kazuyo Wada、Keiko Kanazawa、Yukiko Nakagawa
DOI:10.1039/p19810000947
日期:——
Syntheses of 5,10,15-(8) and 2,5,10-trimethyl-6,7,8,9-tetradehydrocyclopentadecenone (12), and 8,13-(9) and 6,13-dimethyl-14,15,16,17-tetradehydrobenzocyclopentadecen-7-one (13), 8,13-(10) and 10,13-dimethyl-14,15,16,17-tetradehydrobenzocyclopentadecen-9-one (14), and 8-methyl-(11) and 6-methyl-16,17,18,19-tetradehydrodibenzo[a,g]cyclopentadecen-7-one (15) are described. The influence of α-methyl substitution
5,10,15-(8)和2,5,10-三甲基-6,7,8,9-四氢环戊烯酮(12)和8,13-(9)和6,13-二甲基-14的合成, 15,16,17-四氢苯并环戊五烯酮-7(13),8,13-(10)和10,13-二甲基-14,15,16,17-四氢苯并环戊五烯酮-9(14)和8-甲基描述了-(11)和6-甲基-16,17,18,19-四氢二苯并[ a,g ]环戊烯-7-(15)。鉴于这些环烯酮以及α-甲基未取代环烯酮的1 H nmr和uv光谱,讨论了α-甲基取代和苯甲酰化对四氢[15]环烯酮环系统的结构和取向的影响。(4)–(7)。