77184-09-9Relevant articles and documents
NEW COMPOUNDS MODULATING GAMMA-SECRETASE AND THEIR USE IN THE TREATMENT OF ALPHA BETA RELATED PATHOLOGIES, SUCH AS ALZHEIMER'S DISEASE
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Page/Page column 102-103, (2010/12/17)
The present invention relates to novel compounds of formulae (I) and (II) and therapeutically acceptable salts thereof, their pharmaceutical compositions processes for making them and their use in therapeutic methods for treatment and/or prevention of var
α-Aminated methyllithium by DTBB-catalysed lithiation of a N- (chloromethyl) carbamate
Ortiz, Javier,Guijarro, Albert,Yus, Miguel
, p. 4831 - 4842 (2007/10/03)
The reaction of O-tert-butyl-N-(chloromethyl)-N-methyl carbamate (1) with lithium powder and a catalytic amount of 4,4'-di-tert-butylbiphenyl (DTBB, 2.5 mol %) in the presence of different electrophiles [Me3SiCl, (i)BuCHO, (t)BuCHO, PhCHO, 4-MeOC6H4CHO, (CH2)4CO, MeCO(n)Pr, Et2CO, MeCO(CH2)2CH=CH2, PhCOMe, PhCO(n)Bu, Ph2CO] in THF at -78°C leads, after hydrolysis with water, to the expected functionalised carbamates 2. Carbamates 2 derived from carbonyl compounds are deprotected with hydrogen chloride (for aromatic aldehyde or ketone derivatives) or with a mixture of phenol and trimethylsilyl chloride (for aliphatic aldehyde derivatives) giving substituted 1,2-diols 4.
α-Nitrogenated organolithium compounds from α-amidomethyl and α-aminomethyl sulfones
Alonso, Diego A.,Alonso, Emma,Najera, Carmen,Ramon, Diego J.,Yus, Miguel
, p. 4835 - 4856 (2007/10/03)
Successive reaction of α-amidomethyl sulfones 7a,b, derived from primary amides, with n-butyllithium and primary alkyl bromides (CH2 = CHCH2Br, CH2 = CMeCH2Br, CH2 = CBrCH2Br, CH ≡ CCH