Уважаемые коллег, помогите, пожалуйста:
1. The mannich condensation of sulfinic acid with aldehydes and carboxamides, sulfonamides, or lactams. Part IV. T. Olijnsma, J. B. F. N. Engberts, J. Strating. Recueil des Travaux Chimiques des Pays-Bas, Volume 86, Issue 4, pages 463–473, 1967
- DOI:
http://dx.doi.org/10.1002/recl.19670860417
2. Mannich-type condensation reactions of sulfinic acids with aldehydes and nitrogen bases: Part. VI. The use of ureas, thioureas and thiobenzamide. H. Meijer, R. M. Tel,J. Strating, J. B. F. N. Engberts. Recueil des Travaux Chimiques des Pays-Bas, Volume 92, Issue 1, pages 72–82, 1973
- DOI:
http://dx.doi.org/10.1002/recl.19730920108
3. Formamide as the amine component in the mannich-type condensation with sulfinic acids and aldehydes†: (Short communication).T. Olijnsma,J. B. F. N. Engberts, J. Strating. Recueil des Travaux Chimiques des Pays-Bas, Volume 91, Issue 2, pages 209–212, 1972
- DOI:
http://dx.doi.org/10.1002/recl.19720910216
4.Folded conformations. Part III†: An NMR study of the conformations of aryl N-arylsulfonylmethyl)-N-methylcarbamates. Mrs. Renee van Est-Stammer, Jan B. F. N. Engberts. Recueil des Travaux Chimiques des Pays-Bas, Volume 91, Issue 11, pages 1298–1308, 1972
- DOI:
http://dx.doi.org/10.1002/recl.19720911104
Заранее спасибо!!!
