2-[2-(4-Benzyl­piperazin-1-ylcarbon­yl)eth­yl]-5,6-diphenyl­pyridazin-3(2H)-one

3-[(E)-1-(Benzyl­oxyimino)­eth­yl]-7-(3-methyl­but-2-en­yloxy)-2H-chromen-2-one

In the title compound, C(23)H(23)NO(4), the dihedral angle beween the chromen-2-one ring system and the benzene ring is 69.73 (10)° and the mol-ecule adopts an E conformation with respect to the C=N double bond. In the crystal, inversion dimers linked by pairs of C-H⋯O hydrogen bonds occur, generating R(2) (2)(12) loops.

1,5-Dimethyl-4-{[1-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl­idene)eth­yl]amino}-2-phenyl-1H-pyrazol-3(2H)-one

In the title compound, C(23)H(23)N(5)O(2), an intra-molecular N-H⋯O hydrogen bond generates an S(6) ring, and the dihedral angle between the pyrazole rings is 48.42 (8)°. The dihedral angles between the pyrazole rings and their attached phenyl rings are 10.06 (8) and 47.53 (8)°.

Microwave assisted base dependent regioselective synthesis of partially reduced chromenes, isochromenes and phenanthrenes.

We have reported a microwave assisted base directed regioselective synthesis of partially reduced chromenes, isochromenes and phenanthrenes. Functionalized 4-(piperidin-1-yl)-5,6-dihydro-2H-benzo[h]-chromen-2-one-3-carbonitriles have been used as precursors, which on reaction with functionalized acetophenones in the presence of KOH in DMF under microwave irradiation yield (Z)-2-(2-aryl-5,6-dihy...

N′-[1-(2,4-Dioxo-3,4-dihydro-2H-1-benzopyran-3-yl­idene)eth­yl]thiophene-2-carbo­hydrazide

The title compound, C(16)H(12)N(2)O(4)S, was obtained by the condensation of 3-acetyl-4-hy-droxy-coumarin with thien-2-ylcarbonyl hydrazide. The pyran ring adopts a 2,4-dione tautomeric form. The benzopyran ring system is almost coplanar with the thio-phene ring [dihedral angle 0.9 (2)°]. The exocyclic C=C double bond has an E geometry. The mol-ecular conformation is stabilized by an intra-mole...

Discussion Word Count: 6,671 Abbreviations and definitions: ACPU, 1-(Adamantan-1-yl)-3-(1-(2-(7-hydroxy-2-oxo-2H-chromen- 4-yl)acetyl)piperidin-4-yl)urea; ARDS, Acute Respiratory Distress Syndrome; AUDA, 12-(3- Adamantan-1-yl-ureido)-dodecanoic acid; CDU, 1-cyclohexyl-3-dodecyl urea; ChEH, Cholesterol Epoxide Hydrolase; CMNPO, Cyano(6-methoxy-naphthalen-2-yl)methyl trans-[(3-phenyloxiran-2-