𝔖 Bobbio Scriptorium
✦   LIBER   ✦

[2+2]- AND [4+2] cycloaddition reactions of 1,3-diazabutadienes with diphenylketene

✍ Scribed by Peter Luthardt; Ernst-Ulrich Würthwein

Publisher
Elsevier Science
Year
1988
Tongue
French
Weight
244 KB
Volume
29
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

&ii&R&: 1,3-Diazabutadienes react with diphenylketene in [2+2] -and [4+2] cycloaddition reacg$ons, depending on the substitution pattern. Spectroscopic data (IR, H-and C-WWR) and results of quantummechanical model calculations (ab initio 3-2lG) are presented. and reactions of 1,3_diazabutadienes 1 1) Reports on syntheses are rare .

📜 SIMILAR VOLUMES

[2+2]- and [4+2]-Cycloadditions of Aryla
[2+2]- and [4+2]-Cycloadditions of Arylazoalkenes to Diphenylketene
✍ Dr. Sven Sommer 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 203 KB 👁 1 views

Table 1 1.1 -Dichloro olefms (2) rrom 2,2,2-trichloroethanols ( I ) By-products 2,2-dichloroethanols ( 3 ) For conditions, see Procedure

Kinetics of the [2+ + 4]-Cycloaddition R
Kinetics of the [2+ + 4]-Cycloaddition Reactions of 1,3-Dithian-2-ylium Ions with 1,3-Dienes
✍ Herbert Mayr; Joachim Henninger 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 287 KB 👁 1 views

The kinetics of the [2 + + 4] cycloadditions of 1,3-dithian-2-cycloaddition pathway by the correlation lg k = s (E + N). Though a concerted cycloaddition pathway is not excluded ylium ions (1) with 1,3-dienes was investigated photometrically in dichloromethane. The second-order rate by this finding,