An efficient one-pot synthesis of pyrrolines and tetrahydropyridines from their chloro-precursors via in situ aza-Wittig reaction
摘要:
A simple and efficient method for synthesizing pyrrolines and tetrahydropyridines via an intramolecular aza-Wittig reaction has been achieved by microwave irradiation of the corresponding chloro-alkane derivatives in the presence of tertiary phosphite and sodium azide. The in situ formation of the alkyl azides makes this a facile and safe method for aza-Wittig reactions. (c) 2005 Elsevier Ltd. All rights reserved.
An efficient one-pot synthesis of pyrrolines and tetrahydropyridines from their chloro-precursors via in situ aza-Wittig reaction
作者:Pradeep N.D. Singh、Rodney F. Klima、Sivaramakrishnan Muthukrishnan、Rajesh S. Murthy、Jagadis Sankaranarayanan、Heidi M. Stahlecker、Bhavika Patel、Anna D. Gudmundsdóttir
DOI:10.1016/j.tetlet.2005.04.054
日期:2005.6
A simple and efficient method for synthesizing pyrrolines and tetrahydropyridines via an intramolecular aza-Wittig reaction has been achieved by microwave irradiation of the corresponding chloro-alkane derivatives in the presence of tertiary phosphite and sodium azide. The in situ formation of the alkyl azides makes this a facile and safe method for aza-Wittig reactions. (c) 2005 Elsevier Ltd. All rights reserved.
Syntheses of the principal bread flavor component, 6-acetyl-1,2,3,4-tetrahydropyridine, and acetal protected precursors
作者:Norbert De Kimpe、Christian Stevens
DOI:10.1016/0040-4020(94)01104-8
日期:1995.2
Various synthetic approaches towards the principle bread flavor component, 6-acetyl-1,2,3,4-tetrahydropyridine, and some of its more stable acetal and enol ether derivatives have been developed by elaboration and ring closure of appropriately functionalized imines. The aza-Wittig type cyclization of functionalized δ-azido ketones, carrying an acetal function at the α′-position, proved to be the most