𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis of tetracyclic hydroxyquinones by cycloaddition reactions with dienols.

✍ Scribed by Alicia Amaro; M.Carmen Carreño; Francisco Fariña


Book ID
104237888
Publisher
Elsevier Science
Year
1979
Tongue
French
Weight
241 KB
Volume
20
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Cycloaddition reactions of 1.3-benzothia
✍ Lajos Fodor; János Szabó; Gábor Bernáth; Pál Sohár 📂 Article 📅 1984 🏛 Elsevier Science 🌐 French ⚖ 266 KB

New tetracyclic derivatives (a;k, 5, 8) similar to protoberberinee, but containing a lactam structural element and other hetero atoms besides the bridgehead nitrogen in rings B and C, were prepared by cycloaddttion of 6,7-dimethoxy--2&1,3-benzothiazine (la) with q-substituted aromatic carboxylic aci

Cycloaddition reaction of pyrimidine-die
✍ Shigeo Senda; Tetsuji Asao; Isao Sugiyama; Kosaku Hirota 📂 Article 📅 1980 🏛 Elsevier Science 🌐 French ⚖ 124 KB

A new synthetic approach to quinazolines bearing a carboxy group is described. Reaction of 5-carbonyl substituted 1,3,6-trimethyluracils (I) with dimethyl acetylenedicarboxylate or electrondeficient olefines affords quinazoline derivatives (IU-VI) via pyrimidine(Z)-dienols (II) formed by base-cataly

Enantioselective Synthesis of a Polyfunc
✍ Alain Rouillard; Marc-André Bonin; Pierre Deslongchamps 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 German ⚖ 172 KB

## Abstract Herein we report a convergent enantioselective synthesis of a polyfunctionalized ABCD tetracycle by using an anionic cycloaddition reaction between a chiral bicyclic CD __Nazarov__ intermediate (see **6**), derived from the (−)‐__Weiland–Mischer__ ketone, and an achiral cyclohexenone (s