Zur Kenntnis der Dithioamide der Bernstein‐ und Glutarsäure

Compatibility of Various Carbanion Nucleophiles with Heteroaromatic Nucleophilic Substitution by the SRN1 Mechanism

“…19 2-Benzyl-4-methylthiazole (13b) was obtained from the reaction of phenylthioacetamide and chloroacetone. 20 (E)-N-Methyl-N-phenyl-2-butenamide ( 22) 21 and tert-butyl 3-butenoate (24) 22 were synthesized via reactions of but-2-enoyl chloride with N-methylaniline and 2-methyl-2propanol, respectively. All other reagents were obtained commercially and distilled or recrystallized before use.…”

“…Reaction of 2,4-dimethylthiazole ( 13a ) (3.61 g, 31.8 mmol) with 10 (1.67 g, 10.6 mmol) under photostimulation for 100 min afforded 3.76 g of a dark brown oil. Chromatography with 2:1 hexane−EtOAc gave, following elution of excess 13a , 1.33 g of crude 13b as an orange oil and 0.50 g (14%) of 1,2-bis(4-methylthiazol-2-yl)ethane ( 15 ) on the basis of 13a , mp 64−66 °C, lit . mp 68−69 °C.…”

“…Chromatography with 2:1 hexane-EtOAc gave, following elution of excess 13a, 1.33 g of crude 13b as an orange oil and 0.50 g (14%) of 1,2-bis(4-methylthiazol-2yl)ethane ( 15) on the basis of 13a, mp 64-66 °C, lit. 24 mp 68-69 °C. Distillation of the crude oil gave 1.19 g (59%) of 13b as a pale yellow liquid, bp 105 °C/0.50 mm, lit.…”

Synthesis and magnetic properties of bithiazole‐based polyamide complexes

“…The study on polymers containing bithiazole moieties has been more than half a century. During 1944–1946, Erlenmeyer published some articles concerning these polymers, but left the polymers uncharacterized 1–4. Later, because the thiazole nucleus has excellent thermal and chemical stability, polymers containing bithiazole moieties were extensively studied by several groups in the world 5–9.…”