Cyclothiomethylation of heterochain α,ω-diamines with formaldehyde and H2S
✍ Scribed by V. R. Akhmetova; E. B. Rakhimova; A. B. Minnebaev; R. V. Kunakova; N. F. Galimzyanova
- Book ID
- 114993861
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 2012
- Tongue
- English
- Weight
- 720 KB
- Volume
- 48
- Category
- Article
- ISSN
- 1070-4280
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## Abstract The efficient synthesis of eight new macrocyclic amides (lactams) __via__ reaction of diesters with diamines under normal dilution conditions is described. The role of intermolecular H‐bond formation and steric hindrance is discussed based on ^1^H‐ and ^15^N‐NMR studies of appropriate m
Enthalpies fus H m and temperatures T fus of fusion for a homologous series of ten alkane-α, ω-diamines H 2 N-(CH 2 ) n -NH 2 , where n = (3 to 12), were measured by differential scanning calorimetry. Entropies of fusion fus S m were derived from the experimental results. Temperatures of fusion incr