Reaction of <i>o</i>-Oxazolinylphenyllithium with Carbon Monoxide. Carbonylative Cyclization via an Aroyllithium Intermediate
作者:Keiji Iwamoto、Naoto Chatani、Shinji Murai
DOI:10.1021/jo000977m
日期:2000.11.1
compound, 3,3-dimethyl-2,3-dihydrooxazolo[2, 3-a]isoindol-5(9bH)-one, in 91% yield. This reaction proceeded via an intramolecular cyclization of the aroyllithium species, to give the tricyclic dienolate. Treatment of the tricyclic dienolate with electrophiles, such as alkyl halides, aldehydes, ketones, and epoxides gave the substituted oxazolo[2,3-a]isoindolinones in good yield.
在邻位含有恶唑啉基的苯基锂羰基化,然后用水淬灭,得到三环化合物3,3-二甲基-2,3-二氢恶唑并[2,3-a] isoindol-5(9bH)-一种,产率91%。该反应通过芳酰基锂物质的分子内环化进行,得到三环二烯酸酯。用亲电子试剂,例如卤代烷,醛,酮和环氧化物处理三环二烯酸酯,得到的取代恶唑[2,3-a]异吲哚满酮的收率很高。