Dedicated to Mordecai Rubin, Technion, Haifa, on the occasion of his 80th birthday The cycloadditions of methyl diazoacetate to 2,3-bis(trifluoromethyl)fumaronitrile ((E)-BTE) and 2,3-bis(trifluoromethyl)maleonitrile ((Z)-BTE) furnish the 4,5-dihydro-1H-pyrazoles 13. The retention of dipolarophile
✦ LIBER ✦
Synthesis of (Z)- and (E)-1,2-di(1-adamanyl)ethene and their respective reactions with dichlorocarbene
✍ Scribed by Alan P. Marchand; Dongxia Xing; Simon G. Bott
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 550 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0040-4020
No coin nor oath required. For personal study only.
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## Abstract 1,3‐Dipolar cycloaddition of __E__‐2‐arylidene‐1‐indanones 1a‐h and Z‐aurones 3a‐c with diazomethane provided __trans__‐spiro‐1‐pyrazolines 2a‐h and 4a‐c, respectively, as sole products. However, the same cycloaddition of Z‐1‐thioaurones 5a‐f afforded a mixture of Z‐α‐methyl‐1‐thioauron