Domino Synthesis of 4‐Alkylidene‐3,4‐dihydro‐2
H
‐pyrroles from Homopropargyl Sulfonamides and Aldehydes
摘要:
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
Browne, Elaine J.; Skelton, Brian W.; White, Allan H., Australian Journal of Chemistry, 1981, vol. 34, # 4, p. 897 - 904
作者:Browne, Elaine J.、Skelton, Brian W.、White, Allan H.
DOI:——
日期:——
BROWNE, E. J.;SKELTON, B. W.;WHITE, A. H., AUSTRAL. J. CHEM., 1981, 34, N 4, 897-904
作者:BROWNE, E. J.、SKELTON, B. W.、WHITE, A. H.
DOI:——
日期:——
Tuning of the properties of rhodopsin-based molecular switches
作者:Marina Blanco-Lomas、David Martínez-López、Pedro J. Campos、Diego Sampedro
DOI:10.1016/j.tetlet.2014.04.054
日期:2014.5
The modification of relevant chemical properties of rhodopsin-basedmolecular photoswitches is presented. We show how both the substituents present and the nitrogen atom quaternization are capable to change the wavelength of absorption and the thermal stability of the photoisomer. Adjusting these properties, the molecularswitches could be turned into useful compounds for solar energy storage devices
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.