(Z)-Ethyl 3-phenyl-2-[(triphenylphosphoranylidene)amino]prop-2-enoate

Abstract

The title compound, C29H26N2OP, containing four planar ring systems, exists in the Z form. The short C⋯O [2.711 (3) Å] and C⋯N [2.961 (3) and 2.997 (3) Å] intramolecular contacts may indicate the presence of weak intramolecular hydrogen bonds.

(Z)-Ethyl 3-(4-chlorophenyl)-2-[(triphenylphosphoranylidene)amino]prop-2-enoate

“…The dihedral angles A/B, A/C and B/C are 56.2 (1), 78.8 (2) and 87.4 (1) , respectively. Bond lengths and angles in the title compound (Table 1) are similar to those found in (Z)-ethyl 3phenyl-2-[(triphenylphosphoranylidene)amino]prop-2-enoate (Huang et al, 2005).…”

(Z)-Ethyl 3-(4-methoxyphenyl)-2-[(triphenylphosphoranylidene)amino]prop-2-enoate

“…Bond lengths and angles in the title compound (Table 1) are unexceptional and compare well with those in (Z)-ethyl 3methoxyphenyl-2-[(triphenylphosphoranylidene)amino]prop-2-enoate (Huang, et al, 2005). The short intramolecular contacts CÁ Á ÁO and CÁ Á ÁN (Table 2) may indicate the presence of weak intramolecular C-HÁ Á ÁO and C-HÁ Á ÁN hydrogen bonds.…”

“…For example, the title compound, (I), is an intermediate in the preparation of imidazolinone, which exhibits fungicidal and herbicidal activities (Yang et al, 2004). More than 1200 crystal structures involving iminophosphorane groups have been published, including a recent report from our laboratory (Huang et al, 2005).…”

4-Amino-5-(2-ethoxyphenyl)-2,4-dihydro-2H-1,2,4-triazole-3-thione–triphenylphosphine oxide (1/1)

“…Recently, iminophosphoranes have attracted increasing attention as useful building blocks for nitrogen-containing heterocycles (Fresneda & Molina, 2004). Many interesting crystal structures involving iminophosphorane groups have been published, including some recent reports from our laboratory (Ding et al, 2005;Huang et al, 2005). As an extension of our research, we report the synthesis and crystal structure of the title compound (I), in which an iminophosphorane is not formed.…”

“…For related literature, see: Ding et al (2004); Fresneda & Molina (2004); Huang et al (2005); Jin et al (2004); Xiong et al (2005); Ding et al (2005).…”