One-Pot Preparation of Aromatic Amides, 4-Arylthiazoles, and 4-Arylimidazoles from Arenes
作者:Takahiro Yamamoto、Hideo Togo
DOI:10.1002/ejoc.201800730
日期:2018.8.15
Primary aromatic amides, 4‐arylthiazoles, and 4‐arylimidazoles were smoothly obtained from arenes in good yield in onepot via aryl α‐bromoacetylarenes, which were obtained by reacting simple arenes with α‐bromoacetyl chloride and AlCl3, followed by the reaction with molecular iodine and aq. NH3, thioamides, or amidine under transition‐metal‐free conditions.
Effect of Substituents on the Regioselectivity of the Reaction of α-Tosyloxyketones with Thioureas in Acidic Medium: Access to 2-Aminothiazoles and 2-Imino-2,3-dihydrothiazoles
作者:Ranjana Aggarwal、Rajiv Kumar、Dionisia Sanz、Rosa M. Claramunt
DOI:10.1002/jhet.1676
日期:2014.5
Regioselective condensation of α‐tosyloxyacetophenones 1 and N‐substituted thioureas 2 in acidicmedium to give regioisomers 2‐aminothiazoles I and 2‐imino‐2,3‐dihydrothiazoles II is largely influenced by the substituents present on 1 and 2. A mechanism, supported by DFT calculations has been proposed to explain the observed regioselectively.
Novel and Expedient Regioselective Synthesis of 2-Imino-3-methyl-2,3-dihydrothiazoles
作者:Ranjana Aggarwal、Rajiv Kumar
DOI:10.1080/00397910802029356
日期:2008.6.20
Cyclization of alpha-tosyloxyacetophenones 1 and N-methylthiourea 2 in acidic medium affords a novel and expedient method to synthesize 2-imino-3-methyl-2,3-dihydrothiazoles 3 with excellent level of regiocontrol.
COMPOSITIONS AND METHODS INVOLVING NUCLEAR HORMONE RECEPTOR SITE II