title: Stereoselective one-pot synthesis of substituted (4Z)-2-alkyl-4-benzylidene- 4H-1,3-benzothiazines.
abstract: Substituted (4Z)-4-benzylidene-2-methyl-4H-1,3-benzothiazines (1). and (4Z)-2-ethyl-4-benzylidene-4H-1,3-benzothiazines (2). were synthesized by direct stereoselective reactions of S-phenyl ethanethioate or S-phenyl propanethioate with substituted benzyl nitriles in the presence of triflic anhydride.
authors.affiliation: Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense, E-28040 Madrid, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Herrera
authors.forename: Roberto
authors.initials: R
authors.lastname: Martínez-Alvarez
authors.forename: Pedro
authors.initials: P
authors.lastname: Ramiro
authors.forename: Angel
authors.initials: A
authors.lastname: Sánchez
authors.forename: Rosario
authors.initials: R
authors.lastname: Torres