Tautomeric selectivity towards colchicinoids in the tosylation of colchiceine on a heterogeneous, easily removable catalyst

Organic and Biomolecular Chemistry

Volumn 1, Issue 17, 2003, Pages 3002-3003

  Cavazza, Marino ^a   Pietra, Francesco ^b  

^a UNIVERSITY OF PISA   (Italy)

^b NONE

Author keywords

[No Author keywords available]

Indexed keywords

ALKALINITY; CATALYST SELECTIVITY; CONDENSATION REACTIONS; HIGH PERFORMANCE LIQUID CHROMATOGRAPHY; MOLECULAR STRUCTURE; PHENOLS; REACTION KINETICS;

COLCHICEINE; COLCHICINOIDS; TOSYLATION; TOSYLOXYISOCOLCHICIDE;

AROMATIC COMPOUNDS;

COLCHICEINE; COLCHICINE; DRUG DERIVATIVE; TOLUENESULFONIC ACID DERIVATIVE;

ARTICLE; CATALYSIS; CHEMICAL STRUCTURE; CHEMISTRY;

CATALYSIS; COLCHICINE; MOLECULAR STRUCTURE; TOSYL COMPOUNDS;

EID: 0141629772     PISSN: 14770520     EISSN: None     Source Type: Journal    
DOI: 10.1039/b307650b     Document Type: Article

References (23)

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20. 3S: C, 68.77; H, 4.30; N 4.01; Found: C, 68.49; H 4.20; N 3.95%.
21. a for brucine and DABCO are too close together for the observed yield inversion (Table 1) to be significant.
22. a values 7.70 and 7.24 for 1a and 1b, respectively.
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