A facile synthesis of 1,2-oxaphospholenes and stereoselective conversion into oxaphospholanes
摘要:
Treatment of alpha-acylaltylphosphonates with m-CPBA in the presence of MgSO4, afforded 1,2-oxaphosphol-3-enes 2-oxides and the subsequent cuprate addition produced 1,2-oxaphospholanes stereo selectively, (C) 2003 Elsevier Ltd. All rights reserved.
Phillips, A. M. M. M.; Modro, T. A., Phosphorus, Sulfur and Silicon and the Related Elements, 1991, vol. 55, # 1-4, p. 41 - 47
作者:Phillips, A. M. M. M.、Modro, T. A.
DOI:——
日期:——
Synthesis of Conjugated Polyenes via Sequential Condensation of Sulfonylphosphonates and Aldehydes
作者:Nathan R. Cichowicz、Pavel Nagorny
DOI:10.1021/ol203431e
日期:2012.2.17
Selective metalation of sulfonylphosphonates results in sufficiently stable carbanions that undergo chemoselective Julia-Kocienski condensation with various aldehydes to provide (E)-allylic phosphonates in good yields and selectivities. The subsequent Horner-Wadsworth-Emmons condensation with aldehydes is used to synthesize various unsymmetrical trans-dienes, trienes, and tetraenes. This methodology is utilized for the concise synthesis of a naturally occurring fluorescent probe for membrane properties, beta-parinaric acid.
Zakharov,V.I. et al., Journal of general chemistry of the USSR, 1974, vol. 44, p. 96 - 100
作者:Zakharov,V.I. et al.
DOI:——
日期:——
Reaction of carbanions generated from allylic phosphonates with β-substituted cyclic enones
作者:Malose J. Mphahlele、Tomasz A. Modro
DOI:10.1039/p19960002261
日期:——
Lithiated allylic phosphonates react with 3-methoxy- or 3-chloro-substituted cyclohexanones and cyclopentanones at the beta-carbon according to the addition-elimination mechanism. The initial adducts undergo spontaneous isomerisation to the fully conjugated products, which upon treatment with I-2 in MeOH aromatise to the corresponding 3-substituted anisole derivatives.
PHILLIPS, A. M. M. M.;MODRO, T. A., PHOSPH., SULFUR AND SILICON AND RELAT. ELEM., 55,(1991) N-4, C. 41-47