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Rezayati, Sobhan, Erfani, Zahra, Rezayati, Saman, Hajinasiri, Rahimeh, Rekavandi, Marzieh. (1392). Dipyridine cobalt chloride as an efficient and chemoselective catalyst for the synthesis of 1,1-diacetates under solvent-free conditions. فصلنامه علمی زیست فناوری گیاهان زراعی, 2(Issue 1, pp. 1-81, Serial No. 2), 72-81.
Sobhan Rezayati; Zahra Erfani; Saman Rezayati; Rahimeh Hajinasiri; Marzieh Rekavandi. "Dipyridine cobalt chloride as an efficient and chemoselective catalyst for the synthesis of 1,1-diacetates under solvent-free conditions". فصلنامه علمی زیست فناوری گیاهان زراعی, 2, Issue 1, pp. 1-81, Serial No. 2, 1392, 72-81.
Rezayati, Sobhan, Erfani, Zahra, Rezayati, Saman, Hajinasiri, Rahimeh, Rekavandi, Marzieh. (1392). 'Dipyridine cobalt chloride as an efficient and chemoselective catalyst for the synthesis of 1,1-diacetates under solvent-free conditions', فصلنامه علمی زیست فناوری گیاهان زراعی, 2(Issue 1, pp. 1-81, Serial No. 2), pp. 72-81.
Rezayati, Sobhan, Erfani, Zahra, Rezayati, Saman, Hajinasiri, Rahimeh, Rekavandi, Marzieh. Dipyridine cobalt chloride as an efficient and chemoselective catalyst for the synthesis of 1,1-diacetates under solvent-free conditions. فصلنامه علمی زیست فناوری گیاهان زراعی, 1392; 2(Issue 1, pp. 1-81, Serial No. 2): 72-81.

Dipyridine cobalt chloride as an efficient and chemoselective catalyst for the synthesis of 1,1-diacetates under solvent-free conditions

Iranian chemical communication
مقاله 8، دوره 2، Issue 1, pp. 1-81, Serial No. 2، فروردین 2014، صفحه 72-81    اصل مقاله (246.05 K)
نوع مقاله: Original Research Article
نویسندگان
Sobhan Rezayati* 1؛ Zahra Erfani1؛ Saman Rezayati1؛ Rahimeh Hajinasiri2؛ Marzieh Rekavandi2
1Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
2Chemistry Department, Qaemshahr Branch, Islamic Azad University, Qaemshahr, I. R. Iran
چکیده
1,1-Diacetates(acylals) were prepared by direct condensation of various aldehydes with acetic anhydride using dipyridine cobalt chloride (CoPy2Cl2) as an efficient and green catalyst under solvent-free conditions at room temperature. The important features of this catalyst method are that the catalyst is solid, stable at high temperatures, soluble in water, stable in air, immiscible in common organic solvents, low toxic and, above all, it is reusable. CoPy2Cl2 can be recycled after a simple work-up and reused at least five runs without appreciable loss of its catalytic activity. High chemo-selectivity toward aldehyde in the presence of ketones is another advantage of the present method which provides selective protection of aldehydes in their mixtures with ketones.
کلیدواژه‌ها
CoPy2Cl2؛ acylation؛ Protection؛ solvent-free conditions؛ carbonyl protection
اصل مقاله

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