78349-03-8Relevant articles and documents
Novel synthesis of a 1,3,5-trioxazatriquinane skeleton using a nitrogen clamp
Nagase, Hiroshi,Watanabe, Akio,Harada, Masaya,Nakajima, Mayumi,Hasebe, Ko,Mochizuki, Hidenori,Yoza, Kenji,Fujii, Hideaki
supporting information; experimental part, p. 539 - 542 (2009/09/25)
(Chemical Equation Presente) An α-hydroxyaldehyde derived from naltrexone was converted to an oxazoline dimer with ammonium chloride and sodium acetate in MeOH under reflux. The resulting dimer was treated with dl-camphorsulfonic acid in CHCl3 to give the trimer. The method for trimer synthesis was also applied to general α-hydroxyaldehydes to afford trimers in good yield.
Mercury(II) chloride-mediated cyclization - Rearrangement of O-propargylglycolaldehyde dithioacetals to 3-pyranone dithioketals: An expeditious access to 3-pyranones
Ghorai, Subir,Bhattacharjya, Anup
, p. 207 - 210 (2007/10/03)
(Chemical Equation Presented) O-Propargyl glycolaldehyde dithioacetals undergo a unique cyclization-rearrangement in the presence of mercuric chloride and calcium carbonate to afford 3-pyranones exclusively or along with 2,5-dihydrofuran-3-carboxaldehydes
Selectivities in the Reactions of Alkyl-, Aryl- and Heterosubstituted Organotitanium Compounds
Weidmann, Beat,Widler, Leo,Olivero, Alan G.,Maycock, Christopher D.,Seebach, Dieter
, p. 357 - 361 (2007/10/02)
Solutions of the title compounds R-Ti(OR')3 (1) are generally available from organolithium (or magnesium) derivatives according to equation 1.It is shown (table 1) that some heterosubstituted organotitanium compounds are more stable thermally than their lithium counterparts.The reagents 1 are highly selective carbonylophiles (Tables 1 and 2), their reactivity can be modified by variation of the R'O-group (Table 3) and with the chiral (S)-2-methyl-1-butoxy group an enantioselective addition can be achieved.