Natural kaolinitic clay : A mild and efficient catalyst for the tetrahydropyranylation and trimethylsilylation of alcohols

Synthetic Communications

Volumn 26, Issue 24, 1996, Pages 4539-4544

  Upadhya, T T ^a   Daniel, T ^a   Sudalai, A ^a   Ravindranathan, T ^a   Sabu, K R ^b  

^a NATIONAL CHEMICAL LABORATORY   (India)

^b REGIONAL RESEARCH LABORATORY CSIR   (India)

Author keywords

[No Author keywords available]

Indexed keywords

PYRAN DERIVATIVE;

ARTICLE; CATALYSIS; DRUG SYNTHESIS; REACTION ANALYSIS;

EID: 0030446852     PISSN: 00397911     EISSN: None     Source Type: Journal    
DOI: 10.1080/00397919608004777     Document Type: Article

References (16)

1. nd ed. J. Wiley, New York 1991.
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4. Nishiguchi, T. and Kawamine, K. J. Chem. Soc. Chem. Commun. 1990, 1766.
5. Bongini, A., Cardillo, G., Orena, M. and Sandri, S. Synthesis, 1979, 618; Olah, G.A., Husain, A. and Singh, B.P. Synthesis, 1983, 892.
6. Bongini, A., Cardillo, G., Orena, M. and Sandri, S. Synthesis, 1979, 618; Olah, G.A., Husain, A. and Singh, B.P. Synthesis, 1983, 892.
7. Kumar, P., Dinesh, C.V., Reddy, R.S. and Pandey, B. Synthesis 1993, 1069; Hoyer, S. and Laszlo, P. Synthesis 1986, 655.
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9. Ranu, B.C. and Saha, M., J. Org. Chem., 1994, 59, 8269 and references cited therein.
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11. Laszlo, P. Pure & Appl. Chem. 1990, 62, 2027; Delaude, L., Laszlo, P. and Smith, K. Acc. Chem. Res. 1993, 26, 607.
12. Cornelis, A. and Laszlo, P. Syn. Lett. 1994, 155.
13. For the selective protection of carbonyl functions using the natural kaolinitic clay, see D. Ponde, H.B. Borate, A. Sudalai, T. Ravindranathan and V.H. Deshpande, Tetrahedron Lett. 1996 (In the Press).
14. For purification of the clay, see Sabu, K.R., Sukumar, R. and Lalithambika, M. Bull. Chem. Soc. Jpn., 1993, 66, 3535.
15. Jayachandran, B., Sasidharan, M., Sudalai, A., Ravindranathan, T. and Lalithambika, M. J. Chem. Soc. Chem. Commun. (communicated).
16. Barrer, R.M., Phil. Trans. R. Soc. Lond. A, 1984, 311, 333.