210168-09-5Relevant articles and documents
Mercury(II)-catalyzed synthesis of spiro[4.5]decatrienediones in the presence of water
Hashmi, A. Stephen K.,Schwarz, Lothar,Bolte, Michael
, p. 8969 - 8972 (1998)
Treatment of the easily available p-methoxybenzyl allenyl ketone 2 or the (p-tert-butyldimethylsiloxybenzyl) allenyl ketone 9 with 1% Hg(ClO4)2 in acetonitrile/water provided good yields of the spiro[4.5]deca-3,6,9- triene-2,8-dione 6c. The Hg(II)-catalyzed addition of water to the allene was much slower, the 1,3-diketone 7 was only a minor side-product. The isomeric o-methoxybenzyl allenyl ketone 12 formed some spiro[4.5]deca-3,7,9-triene- 2,6-dione 13, the side-reactions were the addition of water and a new spirocyclization/dimerization leading to 15.
A new gold-catalyzed C-C bond formation
Stephen,Hashmi,Schwarz, Lothar,Choi, Ji-Hyun,Frost, Tanja M.
, p. 2285 - 2288 (2007/10/03)
With a d8 configuration equivalent to palladium(II), gold(III) also catalyzes a number of interesting and effective reactions. The cycloisomerization of allenyl ketones with 1 mol% of catalyst requires about one hour with [PdCl2(MeCN)2] but only a minute with AuCl3; a selective cross coupling of these substrates with Michael acceptors (see scheme) is possible only with the gold catalyst.
A VERSATILE SYNTHESIS OF ARYLACETONES FROM ARYL HALIDES AND ACETYLACETONATE
Sugai, Saburo,Ikawa, Hiroshi,Okazaki, Tokuji,Akaboshi, Sanya,Ikegami, Shiro
, p. 597 - 600 (2007/10/02)
Reaction of aryl halides with sodium or potassium acetylacetonate in the presence of a copper catalyst affords directly arylacetones resulted from deacetylation of initially formed 3-arylacetylacetones in good yields.