Factors Affecting Migration of Tertiary Alkyl Groups in Reactions of Alkylboronic Esters with Bromomethyllithium
作者:Mark C. Elliott、Keith Smith、D. Heulyn Jones、Ajaz Hussain、Basil A. Saleh
DOI:10.1021/jo4000459
日期:2013.4.5
be of great potential for the formation of quaternary carbon centers but often give poor yields/conversions. Calculations and experimental evidence show that tert-alkyl groups migrate less effectively than other types of alkylgroup in such reactions and that O-migration competes. Furthermore, slow/incomplete capture of the bromomethyl reagent by the boronic ester is a problem in more hindered systems
Deboronative functionalization of alkylboron species via a radical-transfer strategy
作者:Fuyang Yue、Mingxing Li、Kangkang Yang、Hongjian Song、Yuxiu Liu、Qingmin Wang
DOI:10.1039/d4sc02889a
日期:——
With advances in organoboron chemistry, boron-centered functional groups have become increasingly attractive. In particular, alkylboron species are highly versatile reagents for organic synthesis, but the direct generation of alkyl radicals from commonly used, bench-stable boron species has not been thoroughly investigated. Herein, we describe a method for activating C–B bonds by nitrogen- or oxygen-radical
随着有机硼化学的进步,以硼为中心的官能团变得越来越有吸引力。特别是,烷基硼物质是用于有机合成的高度通用的试剂,但从常用的、实验室稳定的硼物质直接生成烷基自由基尚未得到彻底研究。在此,我们描述了一种通过氮或氧自由基转移激活 C-B 键的方法,该方法适用于烷基硼酸和酯,并且可用于 Michael 加成反应和 Minisci 反应以生成烷基或芳基化产物。
Gren', A. I.; Bacherikov, V. A.; Turyanskaya, A. M., Journal of Organic Chemistry USSR (English Translation), 1986, vol. 22, # 12, p. 2352 - 2353
作者:Gren', A. I.、Bacherikov, V. A.、Turyanskaya, A. M.
DOI:——
日期:——
Kuznetsov, V. V.; Gren', A. I., Journal of general chemistry of the USSR, 1983, vol. 53, # 6, p. 1288
作者:Kuznetsov, V. V.、Gren', A. I.
DOI:——
日期:——
Kuznetsov, Russian Journal of General Chemistry, 2000, vol. 70, # 10, p. 1576 - 1580