@article { ISI:000246431300013, title = {Efficient one-pot synthesis of alpha-amino phosphonates catalyzed by bismuth nitrate pentahydrate}, journal = {Synlett}, number = {5}, year = {2007}, month = {MAR}, pages = {745-748}, publisher = {GEORG THIEME VERLAG KG}, type = {Article}, address = {RUDIGERSTR 14, D-70469 STUTTGART, GERMANY}, abstract = {

A simple, efficient, and environmentally benign method has been developed for the synthesis of alpha-amino phosphonates through a one-pot reaction of aldehydes with amines and diethyl phosphite in the presence of bismuth nitrate pentahydrate as a catalyst. Some of the major advantages of this protocol are: good yields, the involvement of a less-expensive and non-toxic catalyst, mild and solvent-free reaction conditions and also tolerance towards other functional groups present in the substrates. Eighteen examples are described, highlighting the substrate scope of the reaction.

}, keywords = {aldehydes, alkyl phosphite, alpha-amino phosphonates, amines, bismuth nitrate pentahydrate, synthetic methods}, issn = {0936-5214}, doi = {10.1055/s-2007-970762}, author = {Bhattacharya, Asish K. and Kaur, Tanpreet} } @article { ISI:000255318800025, title = {Amberlite-IR 120 catalyzed three-component synthesis of alpha-amino phosphonates in one-pot}, journal = {Tetrahedron Letters}, volume = {49}, number = {16}, year = {2008}, month = {APR}, pages = {2598-2601}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, type = {Article}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

A simple, efficient, and environmentally benign method for a three-component reaction of an amine, an aldehyde or a ketone, and diethyl phosphite catalyzed by Amberlite-IR 120 resin has been developed to afford alpha-amino phosphonates in high yields and short reaction times under solvent-free reaction conditions. The major advantages of the present method are good yields, inexpensive, ecofriendly and reusable catalyst, mild and solvent-free reaction conditions and tolerance towards various functionalities present in the substrates. (c) 2008 Elsevier Ltd. All rights reserved.

}, keywords = {aldehydes, alkyl phosphite, alpha-amino phosphonates, amines, ion-exchange resin, multi-component reaction}, issn = {0040-4039}, doi = {10.1016/j.tetlet.2008.02.102}, author = {Bhattacharya, Asish K. and Rana, Kalpeshkumar C.} } @article { ISI:000252339100015, title = {Efficient method for the synthesis of acylals from aldehydes under solvent-free conditions catalyzed by antimony trichloride}, journal = {Synthetic Communications}, volume = {38}, number = {1}, year = {2008}, month = {MAY}, pages = {128-134}, publisher = {TAYLOR \& FRANCIS INC}, type = {Article}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

A mild and efficient method has been developed for the preparation of acylals from aldehydes catalyzed by antimony trichloride under solvent-free conditions in very good to excellent yields. The easy availability, low cost, and ease of handling of the catalyst make this procedure especially attractive for large-scale synthesis.

}, keywords = {acetic anhydride, Acylals, aldehydes, antimony trichloride, solvent-free conditions}, issn = {0039-7911}, doi = {10.1080/00397910701651284}, author = {Bhattacharya, Asish K. and Mujahid, Mohammad and Natu, Arvind A.} } @article { ISI:000320914200003, title = {Efficient bakers{\textquoteright} yeast-catalyzed multicomponent synthesis of -aminophosphonates in one pot}, journal = {Synthetic Communications}, volume = {43}, number = {19}, year = {2013}, month = {OCT}, pages = {2583-2589}, publisher = {TAYLOR \& FRANCIS INC}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

Utilizing bakers{\textquoteright} yeast (Saccharomyces cerevisiae) as a biocatalyst, synthesis of -aminophosphonates in one pot has been accomplished by the three-component reaction of an aldehyde, an amine, and diethyl phosphite in moderate to good yields under solvent-free reaction conditions. Supplemental materials are available for this article. Go to the publisher{\textquoteright}s online edition of Synthetic Communications (R) to view the free supplemental file.

}, keywords = {-aminophosphonates, aldehydes, amines, green chemistry, Saccharomyces cerevisiae, solvent-free conditions}, issn = {0039-7911}, doi = {10.1080/00397911.2012.721918}, author = {Bhattacharya, Asish K. and Mujahid, Mohammad} }