𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Reversible 1,3-dipolar cycloaddition of dimethyl 2-thiono-1,3-dithiole-4,5-dicarboxylate with dimethyl acetylenedicarboxylate

✍ Scribed by Juzo Nakayama; Ayako Kaneko; Yoshiaki Sugihara; Akihiko Ishii; Akihiro Oishi; Isao Shibuya

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
156 KB
Volume
11
Category
Article
ISSN
1042-7163

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

Regioselective 1,3-Dipolar Cycloaddition
Regioselective 1,3-Dipolar Cycloadditions of (1Z)-1-(Arylmethylidene)-5,5-dimethyl-3-oxopyrazolidin-1-ium-2-ide Azomethine Imines to Acetylenic Dipolarophiles
✍ Cvetka Turk; Jurij Svete; Branko Stanovnik; Ljubo Golič; Simona Golič-Grdadolnik πŸ“‚ Article πŸ“… 2001 πŸ› John Wiley and Sons 🌐 German βš– 137 KB

The 5,5-dimethylpyrazolidin-3-one (4), prepared from ethyl 3-methylbut-2-enoate (3) and hydrazine hydrate, was treated with various substituted benzaldehydes 5a Β± i to give the corresponding (1Z)-1-(arylmethylidene)-5,5-dimethyl-3-oxopyrazolidin-1-ium-2-ide azomethine imines 6a Β± i. The 1,3-dipolar