Wei‐Ming Xu

[1-(Di­phenyl­phosphinoyl)­propa-1,2-dienyl]­benzene

The title compound, C21H17OP, is a rare example of a structurally characterized allenyl phosphine oxide. The allenyl moiety is linear, as expected, with a bond angle of 179.2 (3)° at the central C atom.

3-(3,5-Di-tert-butyl-4-hydroxy­phen­yl)propionohydrazide

The structure of the title compound, C17H28N2O2, exhibits an elaborate network of N—H⋯N, N—H⋯O and O—H⋯O hydrogen bonds.

4-(2-Nitro­vinyl)-2,3,6,7-tetra­hydro­benzo[1,2-b;4,5-b′]difuran

In the structure of the title compound, C12H11NO4, the two furan rings, one to a greater degree than the other, adopt envelope conformations and are twisted slightly relative to the benzene ring. The olefinic bond displays a trans configuration.

5-{2-[3-(4-Methoxy­phenyl)-4,5-di­hydro­isoxazol-5-yl]­vinyl}-3-p-tolyl­isoxazole

The title compound, C22H20N2O3, displays a trans configuration with respect to the olefinic link. The isoxazole and benzene rings are slightly twisted towards each other.

(Z)‐1‐Methoxy‐1‐phenyl‐2‐(4‐toluene­sulfonyl)­ethene

In the title compound, C16H16O3S, the methoxy group and sulfonyl moiety are cis with respect to the olefinic bond. The two benzene rings, located trans with respect to the olefin bond, are almost perpendicular to each other, forming a dihedral angle of 75.81 (11)°.