engleski

Carbens in polycyclic systems. Generation and fate of pentacyclo[5.4.0.02, 6.03, 10.55, 9]undecanylidene species

Pyrolysis of lithium or sodium salts of pentacyclo[5.4.0.0(2-6).0(3.5).0(5.9)]undec-8, 11-dione ditosylhydrazone 1 gave two products, 4, 5-diazahexacyclo[6.4.1.0(2, 7), 0(3, 11)0(6, 10)0(9, 12)]tridec-4-ene 2 and tetracyclo[6.3.0.0(4, 11)0(5, 9)]undeca-2, 6-diene 3 in a 9:1 ratio. Azoalkane 2 proved to be extremely thermally and photochemically stable. This result Supports the proposed mechanism of formation of 3. which includes the generation of dicarbene species 6a. (C) 2002 Elsevier Science Ltd. All rights reserved.

Cage compounds; Azoalkane; Carbene; Dicarbene

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