@article {42472, title = {Reaction of diaryl-1,2-diones with triphenylphosphine and diethyl azodicarboxylate leading to N, N-dicarboethoxy monohydrazones via a novel rearrangement}, journal = {Organic Letters}, volume = {7}, year = {2005}, month = {MAY}, pages = {2121{\textendash}2123}, abstract = {

A mechanistically novel reaction of diaryl-1,2-diones with diethyl azodicarboxylate and triphenylphosphine to afford N,N-dicarboethoxy monohydrazones is described. The reaction proceeds via a nitrogen to nitrogen migration of a carboethoxy group.

}, doi = {10.1021/ol050403+}, author = {Nair, Vijay and Biju, Akkattu T. and Abhilash, K. G. and Menon, Rajeev S. and Eringathodi, Suresh} } @article {42473, title = {Reaction of huisgen zwitterion with 1,2-benzoquinones and isatins: expeditious synthesis of dihydro-1,2,3-benzoxadiazoles and spirooxadiazolines}, journal = {Organic Letters}, volume = {7}, year = {2005}, month = {OCT}, pages = {5139{\textendash}5142}, type = {Article}, abstract = {

The zwitterionic intermediate generated from dialkyl azodicarboxylate and triphenylphosphine on reaction with 3-methoxy-1,2-benzoquinones afforded dihydro-1,2,3-benzoxadiazoles. N-Substituted isatins furnished spirooxadiazolines under similar conditions.

}, doi = {10.1021/ol051956n}, author = {Nair, Vijay and Biju, Akkattu T. and Vinod, A. V. and Eringathodi, Suresh} } @article {42462, title = {Reaction of huisgen zwitterion with diaryl-1,2-diones and ketones: an efficient protocol for carbon-nitrogen bond formation}, journal = {Synthesis-Stuttgart}, year = {2007}, month = {JAN}, pages = {697-704}, type = {Article}, abstract = {

The reaction of Huisgen zwitterion, derived from triphenylphosphine and dialkyl azodicarboxylate, with diaryl-1,2-diones afforded N,N-dicarboalkoxy monohydrazones via a mechanistically novel rearrangement. Cyclic and acyclic ketones furnished vinyl hydrazinedicarboxylates under similar conditions.

}, keywords = {betaines - diazo compounds - hydrazones - ketones - rearrangements}, doi = {10.1055/s-2007-965910}, author = {Nair, Vijay and Biju, Akkattu T. and Mathew, Smitha C.} } @article {42466, title = {Reaction of tpp-azodicarboxylate zwitterions and aldehydes: unprecedented synthesis of acyl carbamates}, journal = {Tetrahedron Letters}, volume = {48}, year = {2007}, month = {OCT}, pages = {9018{\textendash}9020}, type = {Article}, abstract = {

An efficient synthesis of acyl carbamates from aryl aldehydes by the reaction of triphenylphosphine and dialkyl azoesters is described.

}, doi = {10.1016/j.tetlet.2007.10.092}, author = {Nair, Vijay and Mathew, Smitha C. and Biju, Akkattu T. and Eringathodi, Suresh} } @article {42460, title = {Reaction of huisgen zwitterion with diaryl ketones leading to the facile synthesis of mono- and bis(alkoxycarbonyl)hydrazones}, journal = {Synthesis-Stuttgart}, year = {2008}, month = {MAR}, pages = {1078-1084}, abstract = {

The Huisgen zwitterion, generated from triphenylphosphine and dialkyl azodicarboxylates, afforded upon reaction with diaryl ketones both mono- and bis(alkoxycarbonyl)hydrazones, depending on the reaction conditions.

}, doi = {10.1055/s-2008-1032125}, author = {Nair, Vijay and Mathew, Smitha C. and Biju, Akkattu T. and Eringathodi, Suresh} } @article {42455, title = {Reactions of morita-baylis-hillman acetates with huisgen zwitterions: a novel strategy for the synthesis of ?-amino acid derivatives}, journal = {Synthesis}, year = {2009}, month = {APR}, pages = {1829{\textendash}1833}, abstract = {

The reaction of Huisgen Zwitterion with Morita{\textendash}Baylis{\textendash} Hillman acetates afforded b-amino acid derivatives.

}, keywords = {b-amino acid, Huisgen zwitterion, Morita{\textendash}Baylis{\textendash}Hillman acetate}, doi = {10.1055/s-0028-1088063}, author = {Jose, Anu and Paul, Rony Rajan and Mohan, Resmi and Mathew, Smitha C. and Biju, Akkattu T. and Eringathodi, Suresh and Nair, Vijay} } @article { ISI:000358219300005, title = {Recent advances in employing homoenolates generated by N-heterocyclic carbene (NHC) catalysis in carbon-carbon bond-forming reactions}, journal = {Chemical Society Reviews}, volume = {44}, number = {15}, year = {2015}, month = {MAY}, pages = {5040-5052}, publisher = {ROYAL SOC CHEMISTRY}, address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND}, abstract = {

The use of NHCs for generating homoenolate species has gained widespread popularity in recent years. A number of highly stereoselective processes of NHC-homoenolates have emerged. Homoenolate reactions have also been employed as key steps in the total synthesis of a number of natural products. The use of compatible co-catalysts, improved NHC-catalyst design and the use of novel precursors for homoenolate generation are among the major developments in this area that were disclosed recently. This tutorial review organises and presents the advancements in this rapidly growing area of catalysis and in the process updates a previous account published in 2011 in this journal.

}, issn = {0306-0012}, doi = {10.1039/c5cs00162e}, author = {Menon, Rajeev S. and Biju, Akkattu T. and Nair, Vijay} } @article { ISI:000371566100001, title = {Recent advances in N-heterocyclic carbene (NHC)-catalysed benzoin reactions}, journal = {Beilstein Journal of Organic Chemistry}, volume = {12}, year = {2016}, month = {MAR}, pages = {444-461}, publisher = {BEILSTEIN-INSTITUT}, address = {TRAKEHNER STRASSE 7-9, FRANKFURT AM MAIN, 60487, GERMANY}, abstract = {

N-Heterocyclic carbenes (NHCs) have emerged as a powerful class of organocatalysts that mediate a variety of organic transformations. The Benzoin reaction constitutes one of the earliest known carbon-carbon bond-forming reactions catalysed by NHCs. The rapid growth of NHC catalysis in general has resulted in the development of a variety of benzoin and benzoin-type reactions. An overview of such NHC-catalysed benzoin reactions is presented.

}, keywords = {acyloin reaction, benzoin reaction, N-heterocyclic carbenes, organocatalysis, umpolung}, issn = {1860-5397}, doi = {10.3762/bjoc.12.47}, author = {Menon, Rajeev S. and Biju, Akkattu T. and Nair, Vijay} } @article {42420, title = {Recent advances in N-heterocyclic carbene (NHC)-catalysed benzoin reactions (vol 12, pg 444, 2016)}, journal = {Beilstein Journal of Organic Chemistry}, volume = {12}, year = {2016}, month = {OCT}, pages = {2124-2124}, keywords = {acyloin reaction; benzoin reaction; N-heterocyclic carbenes; organocatalysis; umpolung}, doi = {10.3762/bjoc.12.201}, author = {Menon, Rajeev S. and Biju, Akkattu T. and Nair, Vijay} }