✦ LIBER ✦

Simple prediction of cycloaddition orientation: II—2+2 thermal cycloadditions. Scope and limitations of the method

✍ Scribed by C. Minot; Nguyên Trong Anh

Book ID: 104207255
Publisher: Elsevier Science
Year: 1977
Tongue: French
Weight: 411 KB
Volume: 33
Category: Article
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(77)80011-2

No coin nor oath required. For personal study only.

✦ Synopsis

In the accompanying paper, it has been suggested that, in a cycloaddition, the first ~r bond to be formed is that corresponding to the greatest overlap stabilization. This rule has now been tested successfully on over one hundred 2 + 2 cycloadditions.

Comparisons of our method with other theoretical treatments are made and the reasons for the discrepancies pointed out.

The choice of parameters (for Hiickel calculations) or molecular geometries (for CNDO/2 calculations) is discussed. No particular advantage of CNDO/2 calculations over Hiickel calculations has been observed.

📜 SIMILAR VOLUMES

Scope and Limitations of the Double [4+3

Scope and Limitations of the Double [4+3]-Cycloadditions of 2-Oxyallyl Cations to 2,2‘-Methylenedifuran and Derivatives

✍ Meilert, Kai Torsten; Schwenter, Marc-Etienne; Shatz, Yuli; Dubbaka, Srinivas Re 📂 Article 📅 2003 🏛 American Chemical Society 🌐 English ⚖ 74 KB

Synthesis of Aminopyridines and Aminopyr

Synthesis of Aminopyridines and Aminopyridones by Cobalt-Catalyzed [2+2+2] Cycloadditions Involving Yne-Ynamides: Scope, Limitations, and Mechanistic Insights

✍ Pierre Garcia; Dr. Yannick Evanno; Dr. Pascal George; Dr. Mireille Sevrin; Dr. G 📂 Article 📅 2012 🏛 John Wiley and Sons 🌐 English ⚖ 302 KB

ChemInform Abstract: Synthesis of Aminop

ChemInform Abstract: Synthesis of Aminopyridines and Aminopyridones by Cobalt-Catalyzed [2 + 2 + 2] Cycloadditions Involving Yne-Ynamides: Scope, Limitations, and Mechanistic Insights.

✍ Pierre Garcia; Yannick Evanno; Pascal George; Mireille Sevrin; Gino Ricci; Max M 📂 Article 📅 2012 🏛 John Wiley and Sons ⚖ 72 KB

[4 + 2] Cycloaddition of azodicarboxylat

[4 + 2] Cycloaddition of azodicarboxylate and glycals: a novel and simple method for the preparation of 2-amino-2-deoxy carbohydrates

✍ Fitzsimmons, Brian J.; Leblanc, Yves; Rokach, Joshua 📂 Article 📅 1987 🏛 American Chemical Society 🌐 English ⚖ 307 KB

Methods and Applications of Cycloadditio

Methods and Applications of Cycloaddition Reactions in Organic Syntheses || Recent Developments in The [5+2] Cycloaddition

✍ Nishiwaki, Nagatoshi 📂 Article 📅 2014 🏛 John Wiley & Sons, Inc. ⚖ 369 KB

ChemInform Abstract: Tandem [3 + 2] Cycl

ChemInform Abstract: Tandem [3 + 2] Cycloaddition Reaction of Azoalkenes and Thiocyanic Acid: Extending the Scope of the Classical “Criss-Cross” Cycloaddition Reaction.

✍ J. G. SCHANTL; P. NADENIK 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 29 KB 👁 1 views