作者:Somnath Ghosh、Indira Datta、Rupak Chakraborty、Tapas Kumar Das、Judhajit Sengupta(in part)、Dipak Chandra Sarkar(in part)
DOI:10.1016/0040-4020(89)80142-5
日期:1989.1
Trifluoroacetic acid catalysed reaction of 2-methoxyphenyldiazometliylketone (4a), 2-acetoxyphenyldiazomethylketone (4b) and 3-(2-anisyl)-∞-diazo-2-propanone (11) leads to the formation of coumaranone (6) and 3-chromanone (12), while 4-(2-anisyl)-∞-diazo-2-butanone (16) affords benzco[b]-1-oxepan-3-one (17) and 5-methoxy-2-tetralone (18) in moderate yield. The photochemical decomposition of the said diazoketoneg
三氟乙酸催化的2-甲氧基苯基重氮甲基甲酮(4a),2-乙酰氧基苯基重氮甲基甲酮(4b)和3-(2-茴香基)-∞-重氮-2-丙酮(11)导致香豆烷酮(6)和3-苯并二氢吡喃酮的形成(12),而4-(2-茴香基)-∞-重氮-2-丁酮(16)提供了苯并[b] -1-氧杂-3-酮(17)和5-甲氧基-2-四氢萘酮(18)产量适中。所述重氮酮(4a,11和16)的光化学分解产生产物,这取决于底物中存在的侧链的长度。