21460-75-3Relevant academic research and scientific papers
N-Heterocyclic carbene catalyzed ring expansion of formylcyclopropanes: Synthesis of 3,4-dihydro-α-pyrone derivatives
Li,Dai,You
supporting information; experimental part, p. 1623 - 1625 (2009/09/06)
N-Heterocyclic carbene catalyzed ring expansion of readily accessible 2-acyl-1-formylcyclopropanes was developed. With 5 mol % of triazolium salt 5 and 30 mol % of DBU, ring expansion of various 2-acyl-1-formylcyclopropanes led to 3,4-dihydro-α-pyrones in
Conjugate addition of a primary carbon radical to α,β-unsaturated carboxylic acids
Wu, Baogen,Avery, Bonnie A.,Avery, Mitchell A.
, p. 3797 - 3800 (2007/10/03)
Triethylborane in the presence of trace oxygen was employed simultaneously as a radical initiator and carboxyl protecting group to promote the conjugate radical addition of 2-phenethyl iodide to α,β- unsaturated carboxylic acids in good yields. (C) 2000 Elsevier Science Ltd.
Silyl Phosphites. XVIII. Versatile Utility of α-(Trimethylsilyloxy)-alkylphosphonates as Key Intermediates for Transformation of Aldehydes into Several Carbonyl Derivatives
Sekine, Mitsuo,Nakajima, Masashi,Kume, Akiko,Hashizume, Akio,Hata, Tsujiaki
, p. 224 - 238 (2007/10/02)
Carbonyl addition compounds of diethyl trimethylsilyl phosphite (DTMSP) with aldehydes were converted, by treatment with lithium diisopropylamide (LDA) followed by the successive alkylation and alkaline hydrolysis, to carbonyl derivatives involving aldehydes, unsymmetrical ketones, β,γ-unsaturated ketones, and carboxylic acids. β-Substituted carboxylic esters and γ-substituted lactones were prepared by use of the carbonyl addition compounds of DTMSP with α,β-unsaturated aldehydes.
