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Pilot cities as a testing ground for promoting the patent system in China

✍ Scribed by Shen Jialian

Book ID
107926963
Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
221 KB
Volume
16
Category
Article
ISSN
0172-2190

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N-R pyrroles (R=H, Z, COPh but not Bn, TMS) 6 add selectively at rt to the substituted p-bond of 2,3-bis(trifluoromethyl)-7-oxanorbornadiene 7 under high pressure (14 kbar) to form exclusively the syn-facial N,O-sesquinorbornadienes 8; at higher temperatures the thermodynamic stereoisomers 10,11 are