137307-61-0Relevant articles and documents
Aza-Wittig Rearrangements of N-Benzyl and N-Allyl Glycine Methyl Esters. Discovery of a Surprising Cascade Aza-Wittig Rearrangement/Hydroboration Reaction
Everett, Renata K.,Wolfe, John P.
, p. 9041 - 9056 (2015/09/28)
Treatment of N-(arylmethyl)-N-aryl or N-allyl-N-aryl glycine methyl ester derivatives with nBu2BOTf and iPr2NEt effects an aza-Wittig rearrangement that provides N-aryl phenylalanine methyl ester derivatives and N-aryl allylglycine methyl ester derivatives, respectively, in good yield with moderate to good diastereoselectivity. Under similar conditions, analogous substrates bearing N-carbonyl groups are converted to 1,4,2-oxazaborole derivatives. Additionally, N-allyl-N-aryl glycine methyl ester derivatives subjected to similar conditions at elevated temperatures undergo an aza-[2,3]-Wittig rearrangement, followed by a subsequent hydroboration oxidation reaction, to afford substituted amino alcohol products.
Aza-[1,2]-Wittig rearrangements of N-benzyl glycine methyl esters. A new approach to the synthesis of N-aryl phenylalanine derivatives
Everett, Renata K.,Wolfe, John P.
, p. 3393 - 3395 (2015/06/02)
Treatment of N-(arylmethyl)-N-aryl glycine methyl ester derivatives with Bu2BOTf and iPr2NEt effects an aza-[1,2]-Wittig rearrangement that provides N-aryl phenylalanine methyl esters in good yields. Analogous substrates bearing N-carbonyl groups are converted to 1,4,2-oxazaborole derivatives under similar conditions.
