40058-88-6Relevant articles and documents
A trilactone related to anemonin
Stamos, Ioannis K.,Cassady, John M.
, p. 1001 - 1002 (1996)
Treatment of anemonin sequentially with two equivalents of the anion 2 and iodine gave the monoalkylated monoiodinated iodolactone t-butyl ester 3. Ester cleavage in anhydrous acidic media followed by treatment with sodium hydrogen carbonate transformed 3 to trilactone 4.
Zinc-catalyzed enantiospecific sp3-sp3 cross-coupling of α-hydroxy ester triflates with grignard reagents
Studte, Christopher,Breit, Bernhard
supporting information; experimental part, p. 5451 - 5455 (2009/03/12)
(Chemical Equation Presented) Zinc chloride does the trick and efficiently catalyzes the enantiospecific cross-coupling of α-hydroxy ester triflates with Grignard reagents under mild conditions. Enantiopure α-hydroxy esters are directly available from the chiral pool or by diazotization of α-amino acids. Substantial variations in both reacting partners are tolerated making this methodology an attractive alternative to enolate alkylation featuring a reversal of polarity.