460087-41-6Relevant articles and documents
AZETIDIN COMPOUNDS SUITABLE FOR TREATING DISORDERS THAT RESPOND TO MODULATION OF THE SEROTONIN 5-HT6 RECEPTOR
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Page/Page column 44, (2008/12/04)
The present invention relates to compounds of formula (I) wherein A is C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-hydroxyalkyl, C2-C6-alkenyl, C2-C6-haloalkenyl, C3-C6-cycloalkyl, aryl-C1-C4-alkyl, aryl-C2-C4-alkenyl, aryl or hetaryl; --- is a single or double bond; X1 and X2 are N, CRx1, NRx2 or CRx3Rx4; Rx1, Rx3 and Rx4 are H, halogen, CN, NO2, C1-C6-alkyl, C1-C6-alkoxy, C1-C6-alkylcarbonyl, etc. or two geminal radicals Rx3 and Rx4 together with the carbon atom to which they are bound may form a carbonyl group or a 3- to 6-membered carbocyclic or heterocyclic spiro- annulated ring; Rx2 is hydrogen, C1-C6-alkyl, C1-C6-alkylcarbonyl, C1-C6-haloalkyl, etc.; or two vicinal radicals Rx1, Rx2, Rx3 or Rx4 together with X1 and X2 form a five- or six- membered carbocyclic or heterocyclic fused ring; Y1, Y2 and Y3 are N or CRy; Ry is H, halogen, CN, NO2, C1-C6-alkyl, C1-C6-alkoxy, C1-C6-alkylcarbonyl, C1-C6-haloalkyl, etc.; wherein a maximum of 3 of the radicals X1, X2, Y1, Y2 and Y3 are selected from NRx1 and N; R1 is hydrogen, C1-C6-alkyl, C1-C6-hydroxyalkyl, C1-C6-haloalkyl, etc.; R2 is C1-C4-alkyl or C1-C4-haloalkyl; n is 0, 1 or 2; physiologically tolerated acid addition salts and the N-oxides thereof, pharmaceutical composition comprising them, a method for treating medical disorders selected from diseases of the central nervous system, addiction diseases or obesity, said method comprising administering an effective amount of such compounds to a subject in need and the use of such a compound for preparing a pharmaceutical compositions.
Tandem intramolecular silylformylation and silicon-assisted cross-coupling reactions. Synthesis of geometrically defined α,β-unsaturated aldehydes
Denmark, Scott E.,Kobayashi, Tetsuya
, p. 5153 - 5159 (2007/10/03)
The palladium- and copper-catalyzed cross-coupling reactions of cyclic silyl ethers with aryl iodides are reported. Silyl ethers 3 were readily prepared by intramolecular silylformylation of homopropargyl silyl ethers 2 under a carbon monoxide atmosphere. The reaction of cyclic silyl ethers 3 with various aryl iodides 7 in the presence of [(allyl)PdCl]2, CuI, a hydrosilane, and KF·2H2O in DMF at room temperature provided the α,β-unsaturated aldehyde coupling products 8 in high yields. The need for copper in this process suggested that transmetalation from silicon to copper is an important step in the mechanism. Although siloxane 3 and the product 8 are not stable under basic conditions, KF·2H2O provided the appropriate balance of reactivity toward silicon and reduced basicity. The addition of a hydrosilane to [(allyl)PdCl]2 was needed to reduce the palladium(II) to the active palladium(0) form.
