𝔖 Bobbio Scriptorium
✦   LIBER   ✦

ChemInform Abstract: Formation of Heptaleno(1,2-c)furans and Heptaleno(1,2-c)furanones.

✍ Scribed by P. UEBELHART; P. MOHLER; R.-A. FALLAHPOUR; H.-J. HANSEN

Book ID
112024074
Publisher
John Wiley and Sons
Year
2010
Weight
34 KB
Volume
26
Category
Article
ISSN
0931-7597

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Benzo[a]heptalenes from Heptaleno[1,2-c]
Benzo[a]heptalenes from Heptaleno[1,2-c]furans. Part I : Cycloaddition Reaction of Heptaleno[1,2-c]furans with Different Dienophiles
✍ Peter Uebelhart; Christophe Weymuth; Hans-Jürgen Hansen 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 German ⚖ 643 KB

## Abstract It is shown that heptaleno[1,2‐__c__]furans 1, which are available in two steps from heptalene‐4,5‐dicarboxylates by reduction and oxidative dehydrogenation of the corresponding vicinal dimethanols 2 with MnO~2~ or IBX (__Scheme 4__), react thermally in a __Diels–Alder__‐type [4+2] cycl

Benzo[a]heptalenes from Heptaleno[1,2-c]
Benzo[a]heptalenes from Heptaleno[1,2-c]furans. Part 2 : Formation of Benzo[a]heptalenes with Methoxy Groups at the Benzo Part
✍ Peter Uebelhart; Christophe Weymuth; Anthony Linden; Hans-Jürgen Hansen 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 German ⚖ 720 KB

Scheme 7 a) Ac 2 O/H 2 SO 4 , r.t. b) 1. TfOSiMe 3 /Et 3 N/CH 2 Cl 2 , r.t. 2. NH 4 Cl/H 2 O. a ) A 1 : 1 mixture 17a/18a (80%) was obtained and subjected to subsequent reactions without further purification. b ) After recrystallization 22%. c ) After crystallization 57%; 12% of 17b were recovered.

Formation of 6-Methyl-7,11-diphenylhepta
Formation of 6-Methyl-7,11-diphenylheptaleno[1,2-c]furanones
✍ Xudong Jin; Anthony Linden; Hans-Jürgen Hansen 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 German ⚖ 461 KB

## Abstract The dehydrogenation reaction of a mixture of heptalene‐1,2‐ and heptalene‐4,5‐dimethanols **4a** and **4b** with basic MnO~2~ in AcOEt at room temperature led to the formation of the corresponding heptaleno[1,2‐__c__]furan‐1‐one **6a** and heptaleno[1,2‐__c__]furan‐3‐one **7a** (__Schem