A ring expansion reaction of the 4,5-dihydropyrazole system

✍ Scribed by Raffaello Fusco; Piero Dalla Croce

• Book ID: 104222616
• Publisher: Elsevier Science
• Year: 1970
• Tongue: French
• Weight: 99 KB
• Volume: 11
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)89425-3

✦ Synopsis

In a previous paper(" the reaction between N-pvridinium phenacylids and nitrile imines, which affords bright red compounds, has been reported.

Structure (I) was assigned to these compounds on the basis of their chemical behaviour and of the X-ray crystal structure analysis.