Zinc Perchlorate Hexahydrate Catalyzed Mono- and Bis-Transesterification of Malonic Esters

Servet TURAL

Makale detayları

Zinc Perchlorate Hexahydrate Catalyzed Mono- and Bis-Transesterification of Malonic Esters

Yazarlar:

Servet TURAL

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2008 Vol.32 Issue 2, pp.169-179

Belge Tipi:

Makale

Yayın Tarihi:

1/2008

Belge Dili:

Türkçe

Document ID (Org No.):

2000728525

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

Commercially available zinc perchlorate hexahydrate  [Zn(ClO4)2.6H2O] was found to be a highly effective catalyst for  the transesterification of malonic esters with alcohols.  The  treatment of methyl-, ethyl-, or a-substituted malonic esters  with primary or secondary alcohols in the presence of a catalytic  amount of zinc perchlorate results in good to high yields of the  corresponding esters (68%-99%).  Mono-transesterification products  are also obtained in moderate to good yields (22%-42%).  The  reaction was also carried out with 2-mono- and di-substituted malonic  esters, and in the case of 2-mono- and di-substituted malonic esters,  the reaction time is, in some cases, shorter, in which the yields are  comparable with unsubstituted derivatives.  The cyanomethyl and  bis-cyanomethyl malonic ester derivatives are also used for  transesterification and the corresponding products are obtained in  high yields.  No reaction occurs with the CN group during the  reaction.

 

Commercially available zinc perchlorate hexahydrate  [Zn(ClO4)2.6H2O] was found to be a highly effective catalyst for  the transesterification of malonic esters with alcohols.  The  treatment of methyl-, ethyl-, or a-substituted malonic esters  with primary or secondary alcohols in the presence of a catalytic  amount of zinc perchlorate results in good to high yields of the  corresponding esters (68%-99%).  Mono-transesterification products  are also obtained in moderate to good yields (22%-42%).  The  reaction was also carried out with 2-mono- and di-substituted malonic  esters, and in the case of 2-mono- and di-substituted malonic esters,  the reaction time is, in some cases, shorter, in which the yields are  comparable with unsubstituted derivatives.  The cyanomethyl and  bis-cyanomethyl malonic ester derivatives are also used for  transesterification and the corresponding products are obtained in  high yields.  No reaction occurs with the CN group during the  reaction.

Makale detayları

Zinc Perchlorate Hexahydrate Catalyzed Mono- and Bis-Transesterification of Malonic Esters

Yazarlar: Servet TURAL

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2008 Vol.32 Issue 2, pp.169-179

Belge Tipi: Makale

Yayın Tarihi: 1/2008

Belge Dili: Türkçe

Document ID (Org No.): 2000728525

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Servet TURAL

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2008 Vol.32 Issue 2, pp.169-179

Belge Tipi:

Makale

Yayın Tarihi:

1/2008

Belge Dili:

Türkçe

Document ID (Org No.):

2000728525

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527