Zeolite H-Sdusy Powder (Cbv720) as a Recyclable Catalyst for an Efficient Thiocyanation of Aromatic and Heteroaromatic Compounds in Acetonitrile

Chary, V. Sudhakar; Krishnaiah, G.; Kumar, M. Satish; Rajanna, K. C.

doi:10.1080/10426507.2014.978322

Cited by 8 publications

(1 citation statement)

References 51 publications

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“…The unspent acids left out in these protocols often cause environmental pollution. In recent years, several new approaches have been developed to control the regiochemistry of the reactions [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

Quinolinium bound chromium(VI) reagents for efficient electrophilic aromatic nitration and thiocyanation reactions using sodium nitrate and ammonium thiocyanate

Kodali

Jakku

Kamatala

et al. 2018

Asain J. Green Chem.

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Quinolinium dichromate (QDC) and quinolinium chlorochromate (QCC) were studied as efficient reagents for electrophilic aromatic nitration using sodium nitrite and thiocyanation by using ammonium thiocyanate under conventional, ultrasonic and solvent-free microwave assisted conditions. The microwave-assisted protocols exhibited remarkable rate acceleration and offered selective thiocyanation of the aromatic and heteroaromatic compounds with good yields. Addition of anionic (SDS) micelle to the reaction medium afforded considerable rate enhancements, while cationic (CTAB) and nonionic (Tx-100) micelles did not affect the rate noticeably. These protocols have were extended to regioselective thiocyanation of various aromatic compounds. Results were are completely similar to the nitration protocols. However, the reactions revealed comparatively shorter reaction times, and better yields in nitration reactions than in thiocyanation protocols. Catalytic effect of the SDS was attributed to the electrostatic stabilization of the cationic electrophile (NO2 + in nitration, and SCN + in thiocyanation). KEYWORDS

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Section: Graphical Abstract Introductionmentioning

confidence: 99%

Quinolinium bound chromium(VI) reagents for efficient electrophilic aromatic nitration and thiocyanation reactions using sodium nitrate and ammonium thiocyanate

Kodali

Jakku

Kamatala

et al. 2018

Asain J. Green Chem.

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Nitrogen Dioxide Catalyzed Oxidative Thiocyanation of Arenes with Ambient Air as the Terminal Oxidant

et al. 2016

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NO2 is an effective catalyst for the oxidative thiocyanation of arenes. This unique catalyst is inexpensive and separated easily from the final products because of its low boiling point. The mild reaction conditions allow a series of arenes and thiophenes to be thiocyanated smoothly in moderate to high yields. A preliminary mechanistic investigation suggests that the present reaction may proceed through a radical pathway.

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Rate accelerations with zeolite Y in the synthesis of octahydro xanthenes and benzoxanthenes and their simple bio assay data

Kusampally

Varala

Kamatala

et al. 2019

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Zeolite H-Sdusy Powder (Cbv720) as a Recyclable Catalyst for an Efficient Thiocyanation of Aromatic and Heteroaromatic Compounds in Acetonitrile

Cited by 8 publications

References 51 publications

Quinolinium bound chromium(VI) reagents for efficient electrophilic aromatic nitration and thiocyanation reactions using sodium nitrate and ammonium thiocyanate

Quinolinium bound chromium(VI) reagents for efficient electrophilic aromatic nitration and thiocyanation reactions using sodium nitrate and ammonium thiocyanate

Nitrogen Dioxide Catalyzed Oxidative Thiocyanation of Arenes with Ambient Air as the Terminal Oxidant

Rate accelerations with zeolite Y in the synthesis of octahydro xanthenes and benzoxanthenes and their simple bio assay data

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