@article { ISI:000253334800010, title = {Dimethyl sulfoxide pivaloyl chloride: a new reagent for oxidation of alcohols to carbonyls}, journal = {Synthetic Communications}, volume = {38}, number = {5}, year = {2008}, month = {FEB}, pages = {746-753}, publisher = {TAYLOR \& FRANCIS INC}, type = {Article}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

An efficient procedure for conversion of alcohols to the corresponding carbonyl compounds, an alternative to the classical Swern oxidation, is described. Pivaloyl chloride is employed as a mild and inexpensive electrophile. A possible reaction mechanism is proposed.

}, keywords = {Alcohols, carbonyls, DMSO, pivaloyl chloride, Swern oxidation}, issn = {0039-7911}, doi = {10.1080/00397910701820343}, author = {Dubey, Abhishek and Kandula, Subba Rao V. and Kumar, Pradeep} } @article { ISI:000264061100021, title = {Cobalt(II) chloride hexahydrate-diisopropylamine catalyzed mild and chemoselective reduction of carboxylic esters with sodium borohydride}, journal = {Synthesis-Stuttgart}, number = {4}, year = {2009}, month = {FEB}, pages = {660-664}, publisher = {GEORG THIEME VERLAG KG}, address = {RUDIGERSTR 14, D-70469 STUTTGART, GERMANY}, abstract = {

The cobalt-catalyzed reduction of unsaturated alpha-cyano carboxylic esters using sodium borohydride (NaBH(4)) leads to the corresponding saturated cyano alcohols in high yields. In particular, the new catalytic system cobalt(II) chloride-diisopropylamine in combination with NaBH(4) showed excellent activity in the chemoselective reduction of a variety of carboxylic esters to their corresponding alcohols in good to excellent yields under mild conditions.

}, keywords = {Alcohols, amines, catalysis, Esters, reductions}, issn = {0039-7881}, doi = {10.1055/s-0028-1083353}, author = {Jagdale, Arun R. and Paraskar, Abhimanyu S. and Sudalai, Arumugam} } @article { ISI:000295757900019, title = {Solvent-free selective oxidation of primary alcohols-to-aldehydes and aldehydes-to-carboxylic acids by molecular oxygen over MgO-supported nano-gold catalyst}, journal = {Catalysis Communications}, volume = {13}, number = {1}, year = {2011}, month = {OCT}, pages = {82-86}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Magnesium oxide supported nano-gold catalyst (prepared by the homogeneous deposition precipitation technique) showed high activity/selectivity and excellent reusability in the oxidation of different primary alcohols and aldehydes to corresponding aldehydes and carboxylic acids, respectively, by molecular oxygen (under atmospheric pressure) in the absence of any solvent. Influence of the catalyst calcination temperature (400-900 degrees C), reaction temperature (50-120 degrees C) and use of different solvents (viz. toluene. p-xylene, DMF or DMSO) on the oxidation reaction has also been studied. (C) 2011 Published by Elsevier B.V.

}, keywords = {Alcohols, aldehydes, Au/MgO, Molecular oxygen, Solvent-free oxidation}, issn = {1566-7367}, doi = {10.1016/j.catcom.2011.07.001}, author = {Choudhary, Vasant R. and Dumbre, Deepa K.} } @article { ISI:000316388900003, title = {Highly efficient catalyst derived from Ni-Fe-hydrotalcite for solvent-free O- or S-acetylation of alcohols, phenols and thiols at room temperature}, journal = {Proceedings of the National Academy of Sciences India Section A-Physical Sciences}, volume = {83}, number = {1}, year = {2013}, month = {MAR}, pages = {15-19}, publisher = {NATL ACAD SCIENCES INDIA}, address = {5 LAJPATRAI RD, ALLAHABAD 211002, INDIA}, abstract = {

Solvent-free O-acetylation of alcohols (including secondary and tertiary alcohols) and phenols and S- acetylation of thiols by acetyl chloride with high product yields at room temperature in a very short reaction period can be easily accomplished using a small amount of solid catalyst obtained from the decomposition (at 600 A degrees C) of Ni-Fe-hydrotalcite. Both the reactions are carried out at room temperature under solvent-free conditions. The catalyst can be easily separated from the reaction mixture, simply by filtration and reused several times without a significant loss of its activity.

}, keywords = {Acetyl chloride, Alcohols, Ni-Fe- ht derived catalyst, O- and S-acetylation, Phenols, Solvent-free}, issn = {0369-8203}, doi = {10.1007/s40010-013-0070-z}, author = {Choudhary, Vasant R.} } @article {43894, title = {Simple cobalt(II) chloride catalyzed N-alkylation of amines with alcohols}, journal = {Synthesis-Stuttgart }, volume = {49}, year = {2017}, month = {SEP}, pages = {3957-3961}, type = {Journal Article}, chapter = {3957-3961}, abstract = {

A facile cobalt-catalyzed N-alkylation of amines with alcohols using inexpensive, commercially available CoCl2 center dot 6H(2)O is reported. Employing this readily available cobalt catalyst, a variety of amines with wide functional group tolerance were selectively alkylated under benign conditions.

}, keywords = {(Hetero)Aromatic Amines, Alcohols, Amination, amines, Anilines, Aromatic-amines, Cobalt Catalysis, Dehydrogenation Borrowing Hydrogen, Efficient Catalysts, Hydrogen Autotransfer, Iridium, N-alkylation, Pincer-complex, Secondary Alcohols, Selective Alkylation}, issn = {0039-7881}, doi = {10.1055/s-0036-1589064}, author = {Midya, Siba P. and Mondal, Akash and Begum, Ayesha and Balaraman, Ekambaram} } @article {46411, title = {Altering the O/C ratio of lignin derived monomers without sacrificing atom efficiency}, journal = {ChemistrySelect}, volume = {4}, year = {2019}, month = {DEC}, pages = {14050-14055}, type = {Article}, abstract = {

Synthesis of platform and fuel grade chemicals from lignin without losing atom efficiency and lowering O/C ratio is a challenge in a bio-refinery concept. In this work, we report solid acid catalysed alkylation of lignin derived variety of monomers such as guaiacol, veretrole, phenol, anisole, and catechol using numerous alcohols as alkylating agents. Results elaborate that the type of acidity and structure of catalyst play important role in achieving higher dialkylated products (DAP). With 85\% conversion of guaiacol, 30.9\% DAP formation was achieved at 250 degrees C within 2 h. A unique substrate adsorption study on the catalyst surface and effect of solubility of substrates on the activity of catalyst is evaluated. Catalyst was observed to be recyclable with marginal loss in the activity due to handling error.

}, keywords = {Alcohols, Alkylation, lignin, Monomers, solid acid catalyst, Up-gradation}, issn = {2365-6549}, doi = {10.1002/slct.201903320}, author = {Singh, Dheerendra and Dhepe, Paresh L.} }