title: 2,2-Bis(ethoxycarbonyl)vinyl (BECV) as a versatile amine protecting group for selective functional-group transformations.
abstract: A 2,2-Bis(ethoxycarbonyl) vinyl- (BECV) group was used for the selective protection of amines at room temperature in the presence of potentially interfering functional groups such as OH, SH, COOH as well as other NH(2) groups. Several functional group transformations such as esterification, O-alkylation, O-acylation, N-alkylation, N-acylation, S-alkylation can selectively be carried out in the presence of the BECV group. The selective deprotection of the BECV group was achieved in a short time using ethylenediamine at room temperature while several other functional groups such as benzoate, aliphatic esters, amides and ethers remain intact. The BECV group shows orthogonal stability against the common protecting groups such as Fmoc, Cbz and Boc.
authors.affiliation: School of Chemistry, Bharathidasan University, Palkalaiperur, Tiruchirappalli-620 024, Tamil Nadu, India. ilangovanbdu@yahoo.com
authors.forename: Andivelu
authors.initials: A
authors.lastname: Ilangovan
authors.forename: Rajendran Ganesh
authors.initials: RG
authors.lastname: Kumar