Stereoinversion of Unactivated Alcohols by Tethered Sulfonamides
作者:Paul T. Marcyk、Latisha R. Jefferies、Deyaa I. AbuSalim、Maren Pink、Mu‐Hyun Baik、Silas P. Cook
DOI:10.1002/anie.201812894
日期:2019.2.4
remains an undeveloped area of organic synthesis. Moreover, catalytic activation of this difficult electrophile with predictable stereo-outcomes presents an even more formidable challenge. Described herein is a simple iron-based catalyst system which provides the mild, direct conversion of secondary and tertiary alcohols to sulfonamides. Starting fromenantioenriched alcohols, the intramolecular variant
Sultones and Sultines via a Julia-Kocienski Reaction of Epoxides
作者:Geoffrey M. T. Smith、Paul M. Burton、Christopher D. Bray
DOI:10.1002/anie.201508467
日期:2015.12.7
The development of the homologous Julia–Kocienskireaction has led to the discovery of two new reaction modes of epoxides with sulfones. These pathways allow rapid and direct access to a range of γ‐sultones and γ‐sultines.
Tricyclic dihydrobenzoxazepine and tetracyclic indole derivatives can specifically target bacterial DNA ligases and can distinguish them from human DNA ligase I
Direct formation of epoxyalkylcopper reagents from activated copper and epoxyalkyl bromides and their intranolecular cyclizations
作者:Tse-Chong Wu、Reuben D Rieke
DOI:10.1016/s0040-4039(00)82446-6
日期:——
Epoxyalkylcopper compounds have readily been prepared by the directoxidativeaddition of active copper to epoxyalkyl halides. The intramolecular cyclization of the epoxyalkylcopper reagents via an epoxide cleavage process is described. Significantly, many functional groups can be present in the bromoepoxides yielding highly functionalized carbocycles. The regioselectivity of this cyclization is affected
New organocopper reagents prepared utilizing highly reactive copper
作者:Reuben D. Rieke、Richard M. Wehmeyer、Tse-Chong Wu、Greg W. Ebert
DOI:10.1016/0040-4020(89)80072-9
日期:1989.1
Highly reactive copper solutions have been prepared by the lithium naphthalide reduction of copper(I) iodide/trialkylphosphine complexes. These activated copper solutions will react with organic halides under very mild conditions to form stable organocopper reagents. Significantly, the organocopper reagents can contain considerable functionalities such as ester, nitrile, chloride, epoxide, and ketone