Takai, K.; Hotta, Y.; Oshima, K.; Nozaki, H. Wittig-type reaction of dimetallated carbodianion species as produced by zinc reduction of gem-polyhalogen compounds in the presence of Lewis acids. Bull. Chem. Soc. Jpn. 1980, 53, 1698-1702....
ChemInform Abstract: Wittig‐type Reaction of O = C C = C and N = C㏒ubstituted Methylenetriphenylphosphoranes with N㏒ulfinyl﹑‐toluenesulfonamidebenzothiazole derivativesThe N-sulfinylsulfonamide (I) reacted with the phosphoranes (II) at both the ylide and the carbonyl moiety to form Tos-N...
In this way, asymmetric versions of such powerful reactions as the Wittig reaction and its variants can be developed. Recently, the interest in this class of asymmetric reactions has grown, and several useful new reagents and methods have been reported. In this review, a short discussion of ...
Under the catalytic reaction conditions, a wide variety of aldehydes with different structures could react with bromoacetate to afford β-substitutited or α,β-disubstituted unsaturated esters in high yields with excellent E-stereoselectivity. The modified process, by using sodium bisulfite instead of ...
8 The reaction proceeds through an intramolecular Wittig reaction of the in situ generated ylide intermediate (I) from (II) to provide the corresponding furans.9 We envisage that, the resulting zwitterionic species (II), after the addition of Bu3P to 1 can undergo a proton-exchange reaction ...
Herein we present our recent advances in developing catalytic Wittig-type reactions. More specifically, we reported our results on catalytic Wittig reactions based on readily available Bu 3 P=O as pre-catalyst as well as the first microwave-assisted version of this reaction and the first ...
; Reaction of γ-phosphinoyl- and γ-phosphonio-α,β-epoxysilane with a base followed by addition of a ketone or an aldehyde afforded dienol silyl ether derivatives via a tandem process that involves base-induced ring opening of the epoxide, Brook rearrangement, and Wittig-type reaction....
acyl phosphonatesWittig reactionArbuzov reactionOxo-Diels-AlderDifferent aliphatic and aromatic acyl phosphonatesNadeemMiddleS.MiddleDemirMiddleAyhanMiddleS.MiddlePhosphorus, Sulfur, and Silicon and the Related Elements
ChemInform Abstract: Aza Wittig-Type Reaction Between the Iminophosphorane Derived from 3- Amino-4-phenylthiazole-2(3H)-thione and Iso(thio)cyanates: Preparation of Mesoionic Thiazolo(2,3-b)-1,3,4-thiadiazoles and N,N- Bisheteroarylamines...
Wittig type olefination reactionStilbenesResveratrolDMU-212Five different Ru metal precursors were reduced in imidazolium based ionic liquids under hydrogen atmosphere (4bar) at 50°C to obtain well-dispersed and stable Ru nanoparticles. Transmission electro...