Benzannulation from Alkyne without Metallic Catalysts at Room Temperature to 100 °C
摘要:
An efficient, novel metal-catalyst-free aminobenzannulation of 2-(prop-2-ynyl)(oxo)benzenes 1 with various dialkylamines 2 afforded a variety of 2-aminonaphthalenes 3 in good to excellent yields under mild reaction conditions at room temperature to 100 degrees C (at most).
Copper-Catalyzed Tandem Cross-Coupling and Alkynylogous Aldol Reaction: Access to Chiral Exocyclic α-Allenols
作者:Guangyang Xu、Zhen Wang、Ying Shao、Jiangtao Sun
DOI:10.1021/acs.orglett.1c01712
日期:2021.7.2
tandem cross-coupling/alkynylogous aldol reaction has been developed. The tetrasubstituted allenoates containing both central and axial chirality have been obtained in moderate to good yields and excellent enantio- and diastereoselectivity. Distinct from the previous use of Cu(I) salts, this protocol features the use of copper(II) salts as a catalytic precursor in this asymmetric cross-coupling reaction
已经开发了对映选择性铜催化串联交叉偶联/炔醇醛醇反应。已经以中等至良好的产率和优异的对映选择性和非对映选择性获得了同时含有中心手性和轴向手性的四取代烯丙酸酯。与之前使用的铜 (I) 盐不同, 该协议的特点是在这种不对称交叉偶联反应中使用铜 (II) 盐作为催化前体。
Benzannulation from Alkyne without Metallic Catalysts at Room Temperature to 100 °C
作者:Tienan Jin、Fan Yang、Yoshinori Yamamoto
DOI:10.1021/ol902742u
日期:2010.1.15
An efficient, novel metal-catalyst-free aminobenzannulation of 2-(prop-2-ynyl)(oxo)benzenes 1 with various dialkylamines 2 afforded a variety of 2-aminonaphthalenes 3 in good to excellent yields under mild reaction conditions at room temperature to 100 degrees C (at most).