Study of the fragmentation pathway of α-aminophosphonates by chemical ionization and fast atom bombardment mass spectrometry
作者:Gaurao D. Tibhe、Victoria Labastida-Galván、Mario Ordóñez
DOI:10.1002/rcm.4938
日期:2011.4.15
diastereoselective synthesis of α‐aminophosphonates, their massspectrometry (MS) fragmentation patterns have not yet been fully investigated. The work described here involved a detailed study of the fragmentation of enriched α‐aminophosphonate diastereoisomers by chemical ionization (CI‐MS) and fastatombombardment (FAB)‐MS. The complete characterization of the different conventional MS fragmentation pathways
Uncatalyzed One-Pot Diastereoselective Synthesis of α-Amino Phosphonates Under Solvent-Free Conditions
作者:Gaurao D. Tibhe、Selene Lagunas-Rivera、Elena Vargas-Díaz、Oscar García-Barradas、Mario Ordoñez
DOI:10.1002/ejoc.201001096
日期:2010.12
Uncatalyzedone-pot, three-component reactions of aldehydes, chiral α-methylamines, and dimethyl phosphite undersolvent-freeconditions were used for the diastereoselectivesynthesis of α-aminophosphonates. The reactions proceeded with extremely high efficiency under mild conditions and gave good yields and diastereoselectivities (70:30 to 93:7 dr). This approach could be useful for the large-scale