Studies of systemic acylanilide fungicides. Part II. Crystal structure and molecular conformation of dl -methyl N -(2,6-dimethylphenyl)- N -(2-furoyl)alaninate

A crystalline modification of the title compound (C17H19NO4) was determined by three-dimensional X-ray analysis from diffractometer data. Crystal data: monoclinic,Cc,a=15.997(12) Å,b=7.929(7) Å,c=14.664(11) Å,β=118.70(5)°,Z=4;Dx=1.227 Mg m−3,μ(MoKα)=0.094 mm−1. FinalR=0.068 for 852 observed reflections. The dimethylphenyl ring is strongly twisted (94.9°) with respect to the amidic plane of the molecule, which almost coincides with the furan ring (6.9°).