Methyl 3-amino-but-2-enoate.
The title compound, C(5)H(9)NO(2), is almost planar (r.m.s. deviation for the non-H atoms = 0.036 Å) and an intra-molecular N-H⋯O hydrogen bond generates an S(6) ring. In the crystal, N-H⋯O inter-actions link the mol-ecules into C(6) chains propagating along [010].
Department of Applied Chemistry, Harbin Institute of Technology, Harbin, Heilongjiang 150001,  People's Republic of China.
Xiao
X
Wang
Li-Zhu
LZ
Zhang