α-Nitro-β-iodo(sulfanyl)ethenes in reactions with N,S-binucleophiles
摘要:
alpha-Nitro-beta-iodo(sulfanyl)ethenes were brought into reactions with N,S-binucleophiles that completed with the replacement of the beta-functional group. Iodonitroethenes with thiourea and N,N'-diphenylthiourea provided products of S-substitution. The reaction of less reactive sulfanylnitrostyrene with N,N'-diphenylthiourea and also of iodonitrostyrene with 5-amino-benzothiazolyl-2-thiol required longer time and led to the formation of more stable products of N-substitution. The reactions with 5-aminobenzothiazolyl-2-thiolate in all events resulted in the products of S-substitution.
Oxone® (2KHSO5·KHSO4·K2SO4) was used to promote the nitration of alkenes and alkynes with sodium nitrite (NaNO2) and potassium iodide (KI). This stable, easy-to-handle, and environmentally benign oxidant was used under mild conditions (room temperature) and provided short reaction times. Styrene derivatives that did not contain electron-donating groups afforded the corresponding nitro alkenes in moderate
A Facile Synthesis of β-Iodonitro Alkenes via Iodonitration of Alkynes with tert-Butyl Nitrite and Iodine
作者:Xiaoqing Li、Xiangsheng Xu、Yuanyuan Fan、Bei Zhou、Kun Chen、Bingtao Wang
DOI:10.1055/s-0036-1588794
日期:2017.8
A convenient synthetic approach to β-iodonitro alkenes based on the iodonitration of alkynes with t BuONO and I2 is described. No acid or oxidant is required in this reaction.
描述了一种基于炔烃与 t BuONO 和 I2 碘硝化的 β-碘硝基烯烃的便捷合成方法。该反应不需要酸或氧化剂。
A Facile Synthesis of α -Iodo- β -nitroalkenes from Alkynes Using I<sub>2</sub>/NO<sub>3</sub><sup>−</sup> or KI/NO<sub>3</sub><sup>−</sup>
作者:Mehman S. Yusubov、Irina A. Perederina、Victor D. Filimonov、Tae-Ho Park、Ki-Whan Chi
DOI:10.1080/00032719808006480
日期:1998.3.1
Abstract A covenient method with I2/NO3 − or KI/NO3 − has been developed for the synthesis of α -iodo- β -nitroalkenes from alkynes.