作者:Xiangwen Kong、Jinshuai Song、Jian Liu、Miao Meng、Shuang Yang、Min Zeng、Xinyue Zhan、Chunsen Li、Xinqiang Fang
DOI:10.1039/c8cc01020j
日期:——
have been demonstrated to undergo γ- or α-selective additions to different electrophiles. We disclose here the Brønsted base-catalyzed reaction of allyl ketones and alkynyl 1,2-diketones, which undergo a unique α-selective addition/intramolecular aldol-type annulation/C–C bond cleavage process, and a series of 2-acyloxycyclopent-3-enones can be obtained under very mild conditions.
由容易获得的底物介导的新反应模式的发现是有机合成中的重要研究课题。烯丙基酮和相关化合物已被证明可对不同的亲电试剂进行γ或α选择性加成。我们在这里公开了烯酮和炔基1,2-二酮的布朗斯台德碱催化反应,它们经历了独特的α-选择性加成/分子内羟醛型环化/ CC键断裂过程,以及一系列的2-酰氧基环戊烯- 3-烯酮可以在非常温和的条件下获得。