Ethyl 2-amino-α-(E-methoxyimino)-4-thiazoleacetate

Abstract

CsHnN303S , M r = 229.3, triclinic, P1, a = 8.344(5), b = 10.476(5), c = 8.246 (5) A, a= 103.41 (5), fl = 124.03 (5), 7 = 94.56 (5) °, O m = 1.35 (2),D c= 1.36Mgm -3,Z=2,T=294K.R= 0.074 for 1703 reflexions. The aminothiazolyl and methoxyimino groups are nearly coplanar and perpendicular to the carboxyl group. The molecules form centrosymmetric dimers linked through the aminothiazolyl groups; moreover, each molecule is hydrogen bonded to two neighbours through the exocyclic amine and carbonyl groups.

Ethyl 2-amino-α-(E-methoxyimino)-4-thiazoleacetate hydrobromide

“…(6) 517 (7) 811 (5) 55 Table 3. Mean torsion angles of the thiazolium salt compared with those of the corresponding base (Laurent, Durant & Evrard, 1981) E (Sheldrick, 1976). H atoms were found from difference maps, including one attached to N(4).…”

Crystal and molecular structure of (Z)-2-(1,3-benzothiazol-2-yl)-2-(6,7,8,9-tetrahydro-5H-benzocyclohepten-5-ylidene)ethanonitrile

“…1.378(3) C15--C16 1.366(2) C5--C6 1.396(2) C16--C17 1.380(2) C6--C8 1.468(2) C17--C18 1.389(2) C8--C9 1.347(2) C18--C19 1.386 (2) 1974, Laurent et al, 1981, Bhatia et al 1991. The cyano group is slightly inclined with respect to the mean benzothiazole ring.…”

(2Z)-Methyl 2-(2-amino-1,3-thiazol-4-yl)-2-(methoxyimino)ethanoate

“…For a related structure, see: Laurent et al (1981). For background to the use of the title compound in organic synthesis, see: Khanna et al (1999).…”

“…The crystal structure of (II) Ethyl 2-amino-α-(E-methoxyimino)-4-thiazoleacetate (Laurent et al, 1981) has been published. (I) differs from (II) due to the methoxy group attached with carbonyl instead of ethoxy moiety.…”