AbstractAbstract: We describe a domino synthesis of 4‐alkylidene‐3,4‐dihydro‐2H‐pyrroles from aryl‐substituted homopropargyl sulfonamides and aldehydes promoted by cheap and easy‐to‐handle TsOH ⋅ H2O. The present reactions proceed through cyclocondensation of α‐sulfonamidoethyl‐α,β‐enone intermediates, which are formed by ring‐cleavage of 3‐acylpyrrolidines corresponding to aza‐Prins cyclized intermediates. By controlling the conditions, 3‐acylpyrrolidines can be obtained.
Synthesis and Photoisomerization of Rhodopsin-Based Molecular Switches
作者:Marina Blanco-Lomas、Pedro J. Campos、Diego Sampedro
DOI:10.1002/ejoc.201200870
日期:2012.11
A new family of switches based on a rhodopsin chromophore is presented. These new photoswitches fulfil most of the required features for an efficient switch to be used in practical applications. The synthetic route is simple and versatile and enables substituents capable of acting as anchoring points to be incorporated. Also, substitution can be used to fine tune the switches' properties. The photostationary