𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The First Tetrathio-Substituted Cyclobutane-1,2,3,4-tetracarbonitrile - A New Highly Substituted Cyclobutane

✍ Scribed by Spannenberg, Anke ;Holdt, Hans-Jürgen ;Teller, Joachim ;Praefcke, Klaus ;Kopf, Jürgen

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
279 KB
Volume
1996
Category
Article
ISSN
0947-3440

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The first tetrathio‐substituted cyclobutane‐1,2,3,4‐tetracarbonitrile 9 was obtained by an intramolecular photoinduced [2 + 2] cycloaddition reaction of the 14‐membered macrocyclic tetrathioether 7 containing two 1,2‐dicyano‐1,2‐dithioethene units in dichloromethane in 73% yield.

📜 SIMILAR VOLUMES

2-Bis (dimethylamino)phosphinoyl-1-lithi
2-Bis (dimethylamino)phosphinoyl-1-lithio-1, 2, 3, 4-tetrahydroisoquinoline. A highly nucleophilic d1-reagent for the preparation of 1-substituted tetrahydroisoquinolines
✍ Dieter Seebach; Masaaki Yoshifuji 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 German ⚖ 284 KB

## Abstract The title compound **4** is generated from the phosphoric amide **5** in tetrahydrofuran with butyllithium. The lithium reagent **4** is stable at room temperature; its reactions with electrophiles furnish the products **6–22**, **26**, **27**, see __Table 1__ and the __Scheme__. A seco

The synthesis and X-ray structure of 1,2
The synthesis and X-ray structure of 1,2,3,4-cyclobutane tetracarboxylic dianhydride and the preparation of a new type of polyimide showing excellent transparency and heat resistance
✍ Hideo Suzuki; Toyohiko Abe; Koujirou Takaishi; Miyuki Narita; Fumio Hamada 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 265 KB 👁 1 views

Some polyimide films based on cyclobutane-1,2,3,4-tetracarboxylic dianhydride (CBDA) and aromatic diamines were synthesized to investigate their temperature resistance and percent transmission of light. The preparations of CBDA were investigated; they produced almost 10 times the yield of CBDA in co