29903-10-4Relevant articles and documents
Synthesis of acyclic ketones by catalytic, bidirectional homologation of formaldehyde with nonstabilized diazoalkanes. Application of a chiral diazomethyl(pyrrolidine) in total syntheses of erythroxylon alkaloids
Wommack, Andrew J.,Kingsbury, Jason S.
, p. 10573 - 10587 (2013/11/19)
This work offers a catalytic approach to convergent ketone assembly based upon formal and tandem C-H insertion of diazoalkanes in the presence of limiting amounts of monomeric formaldehyde, which is easily generated as a gas by thermolysis of the inexpensive and abundant paraformaldehyde (~30 USD/kg). The method forms di-, tri-, and even tetrasubstituted acetones with high efficiency, and it has streamlined a synthesis of (-)-dihydrocuscohygrine in which the absolute stereochemistry of a proline-based starting material is preserved. Assisted by the advent of new protocols for hydrazone oxidation, we also provide full details on handling non-carbonyl-stabilized diazo compounds.
Antiprotozoal diamidines
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, (2008/06/13)
Diamidines of the formula STR1 wherein X is a propylene, isobutylene, guanidine, pyrrole, tetrazole, imidazole or substituted imidazole group; and 2-[4-(2-imidazolinyl)phenyl]-6-(2-imidazolinyl)indole, are useful in the treatment of certain protozoal infections in mammals, particularly in cattle.
ACTIVATED METALLIC NICKEL IN PREPARATION OF SYMMETRICAL 1,3-DIARYLPROPAN-2-ONES FROM BENZYLIC HALIDES AND OXALYL CHLORIDES
Inaba, Shin-ichi,Rieke, Reuben D.
, p. 25 - 28 (2007/10/02)
Oxidative addition of benzylic halides to nickel in the metallic state followed by insertion of carbon monoxide generated from alkyl oxalyl chlorides proceeded smoothly to give symmetrical 1,3-diarylpropan-2-ones in moderate yields.