Seied Ali POURMOUSAVI and Zahra ZINATI

14882

H2{SO}4-silica as an efficient and chemoselective catalyst for the synthesis of acylal from aldehydes under solvent-free conditions

A variety of aldehydes react with acetic anhydride in the presence of a catalytic amount of H2SO4-silica to afford the corresponding 1,1-diacetates (acylals) in excellent yields. Ketones are not affected under the reaction conditions. The advantages are the simplicity of the acylation procedure, and the relatively non-toxic nature of the catalyst as well as its easy availability and low cost.
Anahtar Kelimeler:

Acylals, aldehydes, catalysis, solvent-free reactions, H2SO4-silica.

H2{SO}4-silica as an efficient and chemoselective catalyst for the synthesis of acylal from aldehydes under solvent-free conditions

A variety of aldehydes react with acetic anhydride in the presence of a catalytic amount of H2SO4-silica to afford the corresponding 1,1-diacetates (acylals) in excellent yields. Ketones are not affected under the reaction conditions. The advantages are the simplicity of the acylation procedure, and the relatively non-toxic nature of the catalyst as well as its easy availability and low cost.
Keywords:

Acylals, aldehydes, catalysis, solvent-free reactions, H2SO4-silica.,

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  • C H H + Ac2O (4 mmol) 2 min Solvent-Free Conditions + % % O H + Ac2O (4 mmol) 3 min Solvent-Free Conditions H + mmol mmol % % O H + Me mmol mmol O H + MeO mmol mmol MeO Me % % C H + % % Scheme 2.
Turkish Journal of Chemistry-Cover
  • ISSN: 1300-0527
  • Yayın Aralığı: Yılda 6 Sayı
  • Yayıncı: TÜBİTAK
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