15997-19-0Relevant articles and documents
Preparation of Various 1,1-Dihalo-2-haloalkylcyclopropanes and 1,1,2-Trihalocyclopropanes and their Reduction to Dihalides using Tributyltin Hydride
Pettersen, Anita,Jorgensen, Evy,Sydnes, Leiv K.
, p. 603 - 609 (2007/10/02)
The title compounds, most of which were obtained by dihalocarbene addition to the corresponding alkenes, are generally reduced to dihalides in good yields. 1,1-Dichloro-2-chloromethyl-2-methylcyclopropane and all the tribromides investigated are attacked regioselectively at the gem-dihalo moiety, yielding isomeric mixtures of 1-halo-2-haloalkylcyclopropanes.Trihalides containing both bromo and chloro substituents are always attacked at the C-Br bond; as a consequence substituted 2-bromomethyl-1,1-dichlorocyclopropanes undergo ring opening and form 4,4-dichloro-1-butene derivatives.
Sulfoxide derivatives of benzimidazoles
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, (2008/06/13)
Sulfoxide derivatives of benzimidazoles are provided having the structure STR1 wherein R1 is lower alkyl or phenyl-lower alkyl, R2 and R3 may be the same or different and are hydrogen or lower alkyl, R4 is alkylcycloalkyl, halocycloalkyl or cycloalkenyl, and m is 0 to 3, n is 0 to 3, m + n being 5. These compounds are useful as anthelmintic agents.
