8088. R-11

Nomenclature

CAS number: 126-15-8
1,5a,6,9,9a,9b-Hexahydro-4a(4H)-dibenzofurancarboxaldehyde; 2,3,4,5-bis(2-butenylene)tetrahydrofurfural; MGK-11; MGK Repellent 11 (McLaughlin).
C13H16O2; mol wt 204.26.
C 76.44%, H 7.90%, O 15.67%.

Description and references

Prepd by heating furfuraldehyde with butadiene and water under pressure: Hillyer, Nicewander, US 2683151 (1954 to Phillips Petroleum). Clinical efficacy vs sand flies: F. P. Fossati, M. Maroli, Trans. R. Soc. Trop. Med. Hyg. 80, 771 (1986).

Chemical structure

Properties

Liquid, bp 307°. d420 1.10. mp -80°. nD20 1.5254. Practically insol in water.

Derivative

Oxime.

Properties

mp 97.2°.

Derivative

Dinitrophenylhydrazone.

Properties

mp 152.8°.

Use

Insect repellent.