Substituted benzocyclobutenes, a process for their preparation a

Details Substituted benzocyclobutenes, a process for their preparation a Substituted benzocyclobutenes, a process for their preparation a

1989-05-24

1993-06-15

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

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

Patent

active

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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