求助英文文献4篇

【期刊】：J. Org. Chem.【年、卷、期、起止页码】1991, 56 (6), pp 2240–2244【全文链接】：http://pubs.acs.org/doi/abs/10.1021/jo00006a052【序号】：2
【作者】：Seyed Mohammad Vahdat, Robabeh Baharfar, Mahmood Tajbakhsh, Akbar Heydari, Seyed Meysam Baghbanian, Samad Khaksar.
【题名】：Organocatalytic synthesis of α-hydroxy and α-aminophosphonates【期刊】：Tetrahedron Letters【年、卷、期、起止页】Volume 49, Issue 46, 10 November 2008, Pages 6501-6504【全文链接】：http://www.sciencedirect.com/science?_ob=ArticleListURL&_method=list&_ArticleListID=-230345699&_sort=r&_st=13&view=c&_acct=C000228598&_version=1&_urlVersion=0&_userid=10&md5=a1459f26ea93f5181ce4e61f06a05675&searchtype=a

【期刊】：Org. Lett.【年、卷、期、起止页】2009, 11 (17), pp 3882–3885【全文链接】：http://pubs.acs.org/doi/abs/10.1021/ol901455q

【期刊】：Synthesis【年、卷、期、起止页】1984(4): 330-332【全文链接】：https://www.thieme-connect.com/ejournals/abstract/10.1055/s-1984-30832