亚硝酸叔丁酯(TBN)与各种内部烯烃的反应不同,从而产生有趣且有用的产物。使用亚硝酸叔丁酯(TBN),喹啉和K 2 S 2 O 8可从内部烯烃中合成1,2,5-恶二唑N-氧化物(呋喃烷)。在相同的反应条件下,α,β-不饱和羧酸以及环状和无环内部烯烃都分别通过脱羧和直接硝化途径提供了硝基烯烃作为唯一产物。
Dehydrative Coupling of Benzylic Alcohols Catalyzed by Brønsted Acid/Lewis Base
作者:Marlene Böldl、Ivana Fleischer
DOI:10.1002/ejoc.201900965
日期:2019.9.15
A combination of Brønsted acid and Lewis base catalyses two dehydrative transformations of benzylic alcohols: homocoupling and hydroarylation.
布朗斯台德酸和路易斯碱的组合催化苄醇的两个脱水转化:均偶联和氢芳基化。
Cobalt-catalyzed dimerization of alkenes
作者:Chun-Chih Wang、Pao-Shun Lin、Chien-Hong Cheng
DOI:10.1016/j.tetlet.2004.04.085
日期:2004.8
PPh3 and zinc metal conjugated alkenes (CH2CHCOOR, CH2CHCN, CH2CHSO2Ph and CH2CHCONEt2) undergo reductive tail-to-tail dimerization to yield the corresponding saturated linear products. Under similar reaction conditions, vinylarenes (ArCHCH2) give stereoselective head-to-tail dimerization products, trans-1,3-diarylbut-1-ene, in good to excellent yields.
Highly efficient TfOH-catalyzed head-to-tail dimerization of vinylarenes
作者:Hui-Lan Yue、Xiao-Hui Zhao、Lei Jiang、Yun Shao、Li-Juan Mei
DOI:10.1080/00397911.2015.1127384
日期:2016.1.17
ABSTRACT A convenient and efficient TfOH-catalyzed head-to-tail dimerization of vinylarenes has been realized under mild conditions. The present protocol provides an attractive approach to a diverse range of higher olefins in good to excellent yields. GRAPHICAL ABSTRACT
Iron-Catalysed Regio- and Stereoselective Head-to-Tail Dimerisation of Styrenes
作者:Jose R. Cabrero-Antonino、Antonio Leyva-Pérez、Avelino Corma
DOI:10.1002/adsc.201000096
日期:——
Cationic iron salts and complexes catalyse the head‐to‐tail dimerisation of styrene derivatives to form the corresponding dimers with good to excellent yields and stereoselectivities. In particular, the use of a phosphine‐iron(III) complex allows the recovery and reuse of the catalyst. The counteranion plays an important role in both the activity and selectivity. These catalysts constitute an alternative
Highly efficient Pd(acac)2/TFA catalyzed head-to-tail dimerization of vinylarenes at room temperature
作者:Hengchang Ma、Qiangsheng Sun、Wenfeng Li、Jinxia Wang、Zhe Zhang、Yaoxia Yang、Ziqiang Lei
DOI:10.1016/j.tetlet.2011.01.056
日期:2011.4
Pd(acac)2 catalyzed dimerization of vinylarenes to form dimers under mild condition with excellent yields and stereoselectivities. In particular, the use of TFA highly promoted the activity and selectivity of the dimerization. The studies on mechanism for the reaction displayed clearly that the dimerization of styrenes is 100% atom economic reaction.