%0 Journal Article %T Synthesis, molecular structure, conformational, and intramolecular hydrogen bond strength of ethyl 3-amino-2-butenoate and its N-Me, N-Ph, and N-Bn analogs; An experimental and theoretical study %A Bazrafshan, Mahmoud %A Vakili, Mohamad %A Tayyari, Sayyed Faramarz %A Fadhil S. Kamounah %A Poul Erik Hansen %A Shiri, Ali %J Journal of Molecular Structure %@ 0022-2860 %D 2023