Substituted benzocyclobutenes, a process for their preparation a

Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing

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556419, 556415, 556422, 556438, 556431, 558387, 558388, 558406, 558410, 558411, 568583, 568626, 568634, 568 56, 560 8, 560 10, 560 17, 560 21, 560 43, 562427, 562435, 562457, 564161, 564191, C07F 708, C07F 718, C07F 710

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052200485

ABSTRACT:
Benzocyclobutene-1,2-dichlorides, -bromides and -iodides which are substituted in the benzene ring are accessible in good yields and short reaction times by reacting substituted 1,2-(dichloromethyl or dibromomethyl)-benzenes with NaI in acetonitrile as the solvent. They can be used together with dienophils, for example 1,4-quinones, in Diels-Alder reactions.

REFERENCES:
patent: 4666925 (1987-05-01), Sun
patent: 4935560 (1990-06-01), Klaus et al.
"Chem. Abs. ", vol. 112, No. 234999r, 1990.
Cava et al., JACS vol. 72 pp. 17105-1705 (1957).
Barton et al., J. Chem Soc. Perkins Trans. vol. 1, pp. 967-971.
McOmie et al., Synthesis, vol. 7, pp. 416-417 (1973).

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