Fifty years after its first discovery by Alan Francis Thomas, we describe a versatile, metal and pressure‐free domino‐Claisen–Cope rearrangement using the readily available α,β‐unsaturated aldehydes 5 or their acetals 5′ and allylic alcohols 6. This transformation provides a convenient access to a large number of radiant citrus and floral rosy odorants. Odor profiles of novel floral rosy and citrus
在艾伦·弗朗西斯·托马斯(Alan Francis Thomas)首次发现五十年之后,我们描述了一种多用途,无金属且无压力的多米诺-克莱森-科普重排方法,它使用易于获得的α,β-不饱和醛5或其缩醛5'和烯丙基醇6进行重排。通过这种转换,可以方便地访问大量的辐射柑橘和花香的玫瑰味气味剂。气味新颖花香红润和柑橘醇的型材13,14,和16进行了研究。化合物14ba具有花香,玫瑰色,天竺葵般的特征,并具有独特的性能和扩散性。复合16ba具有清晰的主要柑橘香气特征,具有干净的绿色葡萄柚/大黄成分。两种香精最近已成功引入Rosyfolia ™(14ba)和Pomelol ™(16ba)香水中。
Betmip (1-(triphenylphosphorylideneaminomethyl)benzotriazole), A unique CH2=N-PPh3+X? equivalent for organic synthesis
作者:Alan R. Katritzky、Jinlong Jiang
DOI:10.1002/prac.199633801132
日期:——
Makin, S. M.; Kruglikova, R. I.; Popova, T. P., Journal of Organic Chemistry USSR (English Translation), 1982, p. 1001 - 1003