Phase-transfer alkylation of diethyl 2-oxopropylphosphonate (9) with 2-iodoalkyl azide afforded 40% of azido phosphonate 6, which underwent a phase-transfer Horner-Emmons Wittig reaction with heptadecanal to provide 80% of azido enone 5. An intramolecular aza-Wittig reaction with polymer-bound Ph3P in toluene at reflux completed the first synthesis of lanopylin B-1 in 76% yield.
KHOUKHI, M.;VAULTIER, M.;CARRIE, R., TETRAHEDRON LETT., 1986, 27, N 9, 1031-1034
作者:KHOUKHI, M.、VAULTIER, M.、CARRIE, R.
DOI:——
日期:——
The use of ω-iodoazides as primary protected electrophilic reagents. Alkylation of some carbanions derived from active methylene compounds and N,N-dimethylhydrazones
作者:Mostafa Khoukhi、Michel Vaultier、Robert Carrié
DOI:10.1016/s0040-4039(86)80040-5
日期:1986.1
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