Dimethyl 2-[22,24-dimethyl-23-oxo-8,11,14-trioxa-25-aza-tetra-cyclo-[19.3.1.0(2,7).0(15,20)]penta-cosa-2,4,6,15(20),16,18-hexaen-25-yl]but-2-enedioate.
The title compound, C(29)H(33)NO(8), is a product of the Michael addition of the cyclic secondary amine subunit of the aza-14-crown-4 ether to dimethyl acetyl-enedicarboxyl-ate. The piperidinone ring exhibits a distorted chair conformation, and the dimethyl ethylenedicarboxylate fragment has a cis configuration with a dihedral angle of 78.96 (5)° between the two carboxyl-ate groups. The crystal packing is stabilized by weak C-H⋯O hydrogen bonds.
Le Tuan
le T
Anh
Truong Hong
TH
Hieu
Anatoly T
AT
Soldatenkov
Nadezhda M
NM
Kolyadina
Victor N
VN
Khrustalev