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Methyl E-2,3-dihydro-1,4-benzodioxin-2-ylideneacetate and methyl E-3,4-dihydro-4-methyl-2H-1,4-benzoxazin-3-ylideneacetate

✍ Scribed by Cannas, M. ;Marongiu, G. ;Navarra, G. ;Floris, C.

Book ID
114504667
Publisher
International Union of Crystallography
Year
1987
Tongue
English
Weight
324 KB
Volume
43
Category
Article
ISSN
0108-2701

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In the title molecule, C 16 H 17 NO, the dihedral angle between the phenyl and benzene rings is 28.4 (1) . The six-membered 3,4-dihydro-2H-1,3-oxazine ring adopts a screw boat conformation. In the crystal structure, weak C-HÁ Á Á(arene) interactions are present.

4-[(1E)-Benzyl­ideneamino]-3-methyl-2,4-
4-[(1E)-Benzyl­ideneamino]-3-methyl-2,4-dihydro-1H-1,2,4-triazole-5-thione
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The acyclic C=N double bond of the title compound, C~10~H~10~N~4~S, is __trans__ configured. The molecule is almost planar. The angle between the two rings is just 10.25 (7)°. The crystal packing is stabilized by N—H...S hydrogen bonds and π–π interactions.

Synthesis of substituted 4-(5-alkyl-thia
Synthesis of substituted 4-(5-alkyl-thiazol-2-ylmethyl)-3,4-dihydro-2H-1,4-benzoxazines and 5-(2,3-dihydro-1,4-benzoxazin-4-ylmethyl)-4-methyl-1-phenyl-1H-pyrazol-3-ylamine
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## Abstract magnified image Substituted 4‐(5‐alkyl‐thiazol‐2‐ylmethyl)‐3,4‐dihydro‐2__H__‐1,4‐benzoxazines and 5‐(2,3‐dihydro‐1,4‐benzoxazin‐4‐ylmethyl)‐4‐methyl‐1‐phenyl‐1__H__‐pyrazol‐3‐ylamines were prepared by the reaction of (2,3‐dihydro‐1,4‐benzoxazin‐4‐yl)‐acetic acid methyl ester and some