Lewis acid mediated reactions of 2,3-epoxyalcohols: an efficient stereocontrolled route to polycyclic diols
作者:Charles M. Marson、Steven Harper、Andrew J. Walker、Jane Pickering、Jonathan Campbell、Roger Wrigglesworth、Simon J. Edge
DOI:10.1016/s0040-4020(01)80561-5
日期:1993.1
2,3-epoxyalcohols are shown to undergo stereoselective reactions in the presence of tin tetrachloride. The resulting diols when treated with acid are converted into polycyclic aromatic hydrocarbons or polycyclic ketones.
Reductive Cleavage of C–X or N–S Bonds Catalyzed by Super Organoreductant CBZ6
作者:Si-Da Wang、Bo Yang、Hao Zhang、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.orglett.2c04346
日期:2023.2.10
cleavage of C(Ar)-X bonds is the key step for the cross coupling of Ar-X with other groups. In this work, under the irradiation of 407 nm LEDs using sodium formate as reductant and thiol as hydrogen atom transfer agent, a variety of (hetero)aryl chlorides, bromides, and iodides could be reduced to corresponding (hetero)arenes. The key intermediates, aryl radicals, could be trapped by either hydrogen, phosphite
C(Ar)-X键的还原断裂是Ar-X与其他基团交叉偶联的关键步骤。在这项工作中,在使用甲酸钠作为还原剂和硫醇作为氢原子转移剂的 407 nm LED 的照射下,多种(杂)芳基氯、溴和碘可以被还原为相应的(杂)芳烃。关键的中间体芳基自由基可以被氢、亚磷酸盐或硼酸盐捕获。相同的还原条件可以扩展到磺胺类药物的脱保护。
TADA M.; SAIKI H.; MIURA K.; SHINOZAKI H., BULL. CHEM. SOC. JAP. <BCSJ-A8>, 1976, 49, NO 6, 1666-1670
作者:TADA M.、 SAIKI H.、 MIURA K.、 SHINOZAKI H.
DOI:——
日期:——
Some Observations on Friedel-Crafts Reactions Involving Unsaturated Ketones. 9-Keto-4b,5,6,7,8,8a,9,10-octahydrophenanthrene