A Convenient in situ Preparation of Triphenylbismuthane (Tropon-2-yl)imide: Reaction with Heterocumulenes and Activated Alcohols
作者:Makoto Nitta、Yuhki Mitsumoto
DOI:10.3987/com-01-9156
日期:——
The first in situ preparation of triphenylbismuthane (tropon-2-yl)imide has been accomplished by the reaction of triphenylbismuth dichloride with 2-aminotropone. The imide is not isolated due to its moisture sensitivity, while it undergoes aza-Wittig type reaction with heterocumulenes leading to cyclohepta-annulated heterocycles in situ, and reacts also as an oxidizing agent of activated alcohols to give the corresponding carbonyl compounds under mild conditions.
Convenient Preparation of Heteroazulenes by the Reaction of 2-Aminotropone with Heterocumulenes in the Presence of a Base
作者:Makoto Nitta、Yuhki Mitsumoto
DOI:10.3987/com-01-9322
日期:——
Synthesis, structure, and reactivity of (tropon-2-ylimino)arsorane and in situ generation of its stiborane and bismuthorane analogues: reactions with heterocumulenes and an activated acetylene giving heteroazulenes
作者:Makoto Nitta、Yuhki Mitsumoto、Hiroyuki Yamamoto
DOI:10.1039/b103098c
日期:——
(Tropon-2-ylimino)pnictoranes of the general structure RNMPh3 (R = tropon-2-yl; M = As, Sb, and Bi) 4–6 have been prepared for the first time by the reaction of 2-aminotropone with Ph3MX2 (M = As, Sb, and Bi) in the presence of a base. The arsorane derivative (M = As) 4 is isolated as a stable crystalline compound, while the stiborane (M = Sb) and the bismuthorane (M = Bi) derivatives 5 and 6 are not isolated and are