69637-66-7Relevant academic research and scientific papers
NOUVELLE VOIE D'ACCES STEREOSELECTIVE AUX ESTERS ACRYLIQUES SON APPLICATION EN CHIMIE DES SUCRES
Vatele, Jean-Michel
, p. 177 - 186 (2007/10/02)
Regio- and stereo-selective synthesis of an acryl residue by treatment of an allyl alcohol with (Z,E)-1-fluoro-1-methoxy-2-phenylsulfinylpropene was performed in three consecutive reactions in the same flask; displacement of F- by the alcohol, Claisen rearrengement, and dehydrosulfinylation.Thus, 1,5-anhydro-2-deoxy-4,6-O-isopropylidene-D-arabino-hex-1-enitol gave methyl 3,7-anhydro-6,8-benzylidene-2,4,5-trideoxy-2-C-methylene-D-ribo-oct-4-enonate and methyl 2-O-allyl-4,6-dideoxy-α-D-erythro-hex-4-enopyranoside gave methyl (methyl 2-O-allyl-3,4,6-trideoxy-5-C-methyl-6-C-methylene-α-L-threo-hept-3-enopyranosyd)uronate, which has a chiral quaternary C-5 atom.
AN EASY AND EFFICIENT SYNTHESIS OF α-METHYLENE-γ,δ-UNSATURATED ESTERS FROM ALLYLIC ALCOHOLS
Vatele, Jean-Michel
, p. 1239 - 1242 (2007/10/02)
A new method for the regio- and stereo-specific introduction of an acrylic ester unit, via a one pot reaction is described.
USE OF METHYL 3-(N,N-DIMETHYLAMINO)PROPIONATE AS A SYNTHON FOR THE CONSTRUCTION OF α-METHYLENE γ-BUTYROLACTONES
Yu, Lin-Chen,Helquist, Paul
, p. 591 - 598 (2007/10/02)
The lithium enolate of methyl 3-(N,N-dimethylamino)propionate reacts with allylic halides to give alkylation products which may be converted into α-methylene γ-butyrolactones by a reaction sequence which includes iodolactonization among other simple steps.
β-Amino Ester Enolate as an Acrylate Anion Equivalent for the Synthesis of α-Methylene Esters, Acids, and Lactones
Yu, Lin-Chen,Helquist, Paul
, p. 4536 - 4541 (2007/10/02)
The lithium enolate (18) of methyl 3-(dimethylamino)propionate (17) has been developed as a synthetic equivalent of the α-anion (15) of acrylic acid.The enolate, obtained by treatment of the free ester (17) with lithium diisopropylamide, may be alkylated with a variety of alkyl halides to give products which may be considered to be protected acrylate esters.Unmasking is accomplished by quaternization with methyl iodide followed by DBN-induced elimination to give the free acrylates.The products derived from allylic halides may conveniently be converted into α-methylene lactones.
