Synthetically Useful Transformations of δ-Sultones and Thiane-1,1-dioxides Obtained by C-H Insertion
摘要:
delta-Sultones and thiane-1,1-dioxides that carry a carbethoxy group at alpha-position, easily accessible by C-H insertion, are potentially useful synthetic intermediates. Their stereoselective alkylation, rearrangement and conversion to gamma-lactones have been demonstrated.
Selective Formation of Six-Membered Cyclic Sulfones and Sulfonates by C−H Insertion
摘要:
Carbethoxy diazosulfones and sulfonates, easily available from corresponding sulfones and sulfonates, undergo C-H insertion with preferential formation of six membered cyclic sulfones and sulfonates.
Asymmetric intramolecular C–H insertion of sulfonyldiazoacetates catalyzed by Rh(II)
作者:Christian S. Jungong、Alexei V. Novikov
DOI:10.1016/j.tetasy.2012.12.002
日期:2013.2
The asymmetric C-H insertion of alkyldiazosulfones has been studied. High selectivity was achieved using a combination of a chiral catalyst and a chiral auxiliary (Rh-2(S-pttl)(4) and menthyl ester). Published by Elsevier Ltd.
Formation of six- versus five-membered cyclic sulfones by C–H insertion
作者:Christian S. Jungong、Jinu P. John、Alexei V. Novikov
DOI:10.1016/j.tetlet.2009.02.044
日期:2009.4
Selectivity of six- versus five-membered ring formation in C-H insertion on alkylsulfonyl diazoacetates is sensitive to the substrate structure and catalyst used. (C) 2009 Elsevier Ltd. All rights reserved.