Palladium-catalyzed synthesis of butatrienes

Chemistry Letters

Volumn , Issue 7, 2000, Pages 776-777

  Ogasawara, Masamichi ^a   Ikeda, Hisashi ^a   Ohtsuki, Kazunori ^a   Hayashi, Tamio ^a  

^a KYOTO UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0034339536     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2000.776     Document Type: Article

References (23)

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14. Palladium-catalyzed selective substitutions of one of the two halides from 1,1-dihalo-1-alkene have been reported. See, a) A. Minato, K. Suzuki, and K. Tamao, J. Am. Chem. Soc., 109, 1257 (1987).
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17. a) dpbp = 2,2'-bis(diphenylphosphino)-1,1'-biphenyl.
18. b) M. Ogasawara, K. Yoshida, and T. Hayashi, Organometallics, 19, 1567 (2000), and references cited therein.
19. 5J = 7.3 Hz, 1H of Z-isomer), 7.51-7.53 (m, 2H of both isomers), 7.57-7.62 (m, 2H of both isomers).
20. HH values of the two isomers of the obtained butatrienes using high-resolution NMR technique (at 500 MHz with 0.076 Hz of digital resolution).
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23. The yield of 3cm of this experiment is 34%, which is much lower than that of Entry 1 in Table 1. This negative effect of 2p is unexpected and cannot be explained at this moment.