TY - JOUR
T1 - Syntheses of optically active 2-(2-benzothiazolylimino)-heterazolidines
AU - Cruz, Alejandro
AU - Gayosso, Martha
AU - Contreras, Rosalinda
PY - 2001
Y1 - 2001
N2 - The syntheses of compounds 4R, 5R-2-[2-benzothiazolylimino]-3-hydro-4-methyl-5-phenylthiazolidine (5a), 4S,5S-2-[2-benzothiazolylimino]-3-, 4-dimethyl-5-phenylthiazolidine (5b), 4R,5S-[2-benzothiazolylimino]-3-hydro-4-methyl-5-phenyloxazolidine (5c), 4R,5S-2-[2-benzothiazolyl-imino]-3, 4-dimethyl-5-phenyloxazolidine (5d), and 4R,5S-2-[2-benzothiazolylimino]-1,3,4-trimethyl-5-phenylimidazolidine (5e) are reported. The stereochemistry of the reaction products and the X-ray diffraction analyses of compounds 5a-d are discussed. Compounds 5a-d present planar structures. We have found short distances between the thiazolidine S1 atom and the benzothiazole N9 atom for 5a and 5b (2.782 and 2.824 Å, respectively) and the distance between the oxazolidine O1 and the benzothiazole S7 for 5d (2.721 Å). These distances are shorter than the sum of the van der Waals radii. These distances, together with the coplanarity of the heterocycles, seem to indicate the existence of a weak coordination bonding from sp2 oxygen or nitrogen atoms towards the sulfur atom.
AB - The syntheses of compounds 4R, 5R-2-[2-benzothiazolylimino]-3-hydro-4-methyl-5-phenylthiazolidine (5a), 4S,5S-2-[2-benzothiazolylimino]-3-, 4-dimethyl-5-phenylthiazolidine (5b), 4R,5S-[2-benzothiazolylimino]-3-hydro-4-methyl-5-phenyloxazolidine (5c), 4R,5S-2-[2-benzothiazolyl-imino]-3, 4-dimethyl-5-phenyloxazolidine (5d), and 4R,5S-2-[2-benzothiazolylimino]-1,3,4-trimethyl-5-phenylimidazolidine (5e) are reported. The stereochemistry of the reaction products and the X-ray diffraction analyses of compounds 5a-d are discussed. Compounds 5a-d present planar structures. We have found short distances between the thiazolidine S1 atom and the benzothiazole N9 atom for 5a and 5b (2.782 and 2.824 Å, respectively) and the distance between the oxazolidine O1 and the benzothiazole S7 for 5d (2.721 Å). These distances are shorter than the sum of the van der Waals radii. These distances, together with the coplanarity of the heterocycles, seem to indicate the existence of a weak coordination bonding from sp2 oxygen or nitrogen atoms towards the sulfur atom.
UR - http://www.scopus.com/inward/record.url?scp=0035211249&partnerID=8YFLogxK
U2 - 10.1002/hc.1089
DO - 10.1002/hc.1089
M3 - Artículo
SN - 1042-7163
VL - 12
SP - 586
EP - 593
JO - Heteroatom Chemistry
JF - Heteroatom Chemistry
IS - 7
ER -