ChemInform Abstract: SYNTHESIS OF NITRILES FROM CARBOXAMIDES WITH ZEOLITES

Rao, A. V. R.; Rao, M. Narayana; Garyali, K.; Kumar, Pratap

doi:10.1002/chin.198433147

Cited by 3 publications

(2 citation statements)

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“…The dehydration of carbamoylpyridines to give nitriles by zeolites has been reported [102]. Dibutylstannic oxide and bis(tributyl)stannic oxide are specific reagents for the transformation of thioamides to nitriles (amides do not react under these conditions) [103] The modification of alkyl groups of alkylpyridines by oxidative ammonolysis is a common and often most convenient method for the preparation of cyanopyridines.…”

Section: Conversion Of Amides Of Pyridinecarboxylic Acids Into Nitrilesmentioning

confidence: 99%

Functionalization of pyridines. 2. Synthesis of acylpyridines, pyridinecarboxylic acids, and their derivatives. Review

Yurovskaya¹,

Mitkin²,

Zaitseva³

1998

Chem Heterocycl Compd

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Advances in the synthesis of acylpyridines, pyridinecarboxylic acids, and their derivatives involving direct functionatization of the pyridine ring and substituent modification over the past 15 years are reviewed.The present review is the second part of a series of reviews on the functionalization of the pyridine ring. In this part, we review the preparation of acylpyridines, pyridinecarboxylic acids, and their derivatives involving both functionalization of the pyridine ring and modification of ring substituents. We should note the general nature of most of the methods examined for the preparation of the various pyridine derivatives containing a wide range of substituents in addition to the indicated functional groups. The limitations of these methods will be noted in each individual case.

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Section: Conversion Of Amides Of Pyridinecarboxylic Acids Into Nitrilesmentioning

confidence: 99%

Functionalization of pyridines. 2. Synthesis of acylpyridines, pyridinecarboxylic acids, and their derivatives. Review

Yurovskaya¹,

Mitkin²,

Zaitseva³

1998

Chem Heterocycl Compd

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“…Consequently, other methods such as the dehydration of primary amides 3 or aldoximes 4-7 have attracted attention. It is known that dehydration of aldoximes into nitriles can be achieved by using a variety of reagents like triethylamine/sulfur dioxide, 4 zeolites, 5 sulfurylchloride fluoride, 6 sulfuryl chloride 7 etc. but many of these suffer from limitations such as high toxicity, vigorous reaction conditions, unsatisfactory yields, tedious work up and use of large excess of reagents.…”

Section: Introductionmentioning

confidence: 99%