Construction of thiazines and oxathianes via [3 + 3] annulation of N-tosylaziridinedicarboxylates and oxiranes with 1,4-dithiane-2,5-diol: application towards the synthesis of bioactive molecules
作者:Rohit Kumar Varshnaya、Prabal Banerjee
DOI:10.1039/c7ob00941k
日期:——
Lewis acid catalyzed [3+3] annulation of N tosylaziridinedicarboxylates and oxiranes with in situ generated mercaptoaldehyde for the synthesis of functionalized thiazine and oxathiane derivatives has been developed. Additionally, this method facilitate the derivatization of thiazine by detosylation and Krapcho monodecarboxylation.
KOH-Promoted Synthesis of Oxirane Functional Derivatives from Diethyl Bromomalonate and Aldehydes under Phase-Transfer Catalysis Conditions
作者:Galina V. Kryshtal、Galina M. Zhdankina、Sergei G. Zlotin
DOI:10.1016/j.mencom.2013.01.008
日期:2013.1
The Darzens condensation of diethyl bromomalonate with aromatic or isoprenoid aldehydes under heterogeneous conditions (KOH/MeCN) in the presence of Bu4NPF6 as a recoverable phase-transfer catalyst afforded the corresponding diethyl 3-R-oxirane-2,2-dicarboxylates in high yields.
FOUCAUD, ANDRE;BAKOUETILA, MEDARD, SYNTHESIS,(1987) N 9, 854-856