Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Richard K. Wojtowski"'
Publikováno v:
Canadian Journal of Chemistry. 58:2380-2385
On the basis of pK measurements, 13C nmr, and chemical arguments, the zwitterionic structures 3 and 4 have been assigned to the two minor products obtained by sulfonating strychnine or brucine in water with a mixture of sulfur dioxide and manganese d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5f0160722d6508be8bbb367346b67b7
https://doi.org/10.1139/v80-383
https://doi.org/10.1139/v80-383
Autor:
Desmond M. S. Wheeler, John T. Edward, Morris Kaufman, Thomas M. Barrett, Richard K. Wojtowski
Publikováno v:
Canadian Journal of Chemistry. 51:1610-1616
5-Oxo-3,5-seco-A-norcholestan-3-ol (4) was prepared in four steps from Windaus' keto-acid (1; R = H), and found to exist almost completely in the tautomeric hemiketal form 5. With ethanol and a trace of acid this affords the ethyl ketals 6a, 6b; unde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bece4d5f51cdf8906c77ad4575150f9e
https://doi.org/10.1139/v73-241
https://doi.org/10.1139/v73-241
Publikováno v:
Chemischer Informationsdienst. 12
On the basis of pK measurements, 13C nmr, and chemical arguments, the zwitterionic structures 3 and 4 have been assigned to the two minor products obtained by sulfonating strychnine or brucine in water with a mixture of sulfur dioxide and manganese d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16ba8def05b2583a64428bfe9d09915d
https://doi.org/10.1002/chin.198114315
https://doi.org/10.1002/chin.198114315
Autor:
Richard K. Wojtowski, Thomas M. Barrett, Desmond M. S. Wheeler, John T. Edward, Morris Kaufman
Publikováno v:
Chemischer Informationsdienst. 4
5-Oxo-3,5-seco-A-norcholestan-3-ol (4) was prepared in four steps from Windaus' keto-acid (1; R = H), and found to exist almost completely in the tautomeric hemiketal form 5. With ethanol and a tra...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2879487e05a3809525a746d5b7bb7707
https://doi.org/10.1002/chin.197333400
https://doi.org/10.1002/chin.197333400