3 research outputs found
Intermolecular C-H...N and C-H...O interactions in (2S,4S,5R)-(-)-3,4-dimethyl-5-phenyl-2-(1,3-thiazol-2-yl)-1,3-oxazolidine
The title compound, CââHââNâOS, prepared from
(1R,2S)-(-)-ephedrine, contains the oxazolidine ring
in an envelope conformation, with the nitrogen atom
0.623 (2) Ă
from the plane of the other four oxazolidine ring
atoms. Intermolecular C--H...N and C--H...O interactions
generate a two-dimensional hydrogen-bonded
network, with shortest C...N and C...O distances of
3.403 (3) and 3.463 (2) Ă
, respectively
Intermolecular N-H...O and C-H...O interactions form a two-dimensional network in (2S,4S,5R)-(-)-3,4-dimethyl-5-phenyl-2-(pyrrol-2-yl)-1,3-oxazolidine
The title compound, Cââ
HââNâ0, prepared from (1R,2S)-
(-)-ephedrine, crystallizes in space group P1 with two
molecules in the asymmetric unit. The oxazolidine rings
of the two molecules adopt an envelope conformation,
with the N atom 0.609 (6) and 0.623 (6)Ă
from the
plane of the other four oxazolidine ring atoms. Intermolecular Npyrrole--H...O and Cphenyl--H...O interactions generate a two-dimensional hydrogen-bonded network with N...O and C...O distances of 3.004 (4) and
3.051 (4)Ă
, respectively, and 3.599 (5) and 3.632 (5)Ă
,
respectively, for the two independent hydrogen-bonding
systems