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Stepwise ionization of the 2,4-dioxybenzaldehyde and 3,4-dimethoxypropiophenone vapors

✍ Scribed by M. E. Akopyan; V. I. Kleimenov; M. V. Kleimenov; A. G. Feofilov

Book ID
110129202
Publisher
SP MAIK Nauka/Interperiodica
Year
2002
Tongue
English
Weight
110 KB
Volume
92
Category
Article
ISSN
0030-400X

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A Stepwise [4 + 3] Cycloaddition Reactio
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✍ Mayr, Herbert ;Heigl, Ulrich W. ;Baran, Janusz πŸ“‚ Article πŸ“… 1993 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 435 KB πŸ‘ 1 views

The 1,3-diphenyl-2-azaallyl anion (1) undergoes [3 + 2 1 cycloaddition reactions with the s-cis-fixed 1,3-dienes 8-11. In contrast, 1,1,2,2,3,3-hexamethyl-4,5-bis(methylene)cyclopenta- ne (7) reacts with 1 to give the [4 + 31 cycloadduct 13 and the linear l,4-addition product 14. This reaction is fo