96597-33-0Relevant academic research and scientific papers
The prins reaction using ketones: Rationalization and application toward the synthesis of the portentol skeleton
Jacolot, Maiwenn,Jean, Mickael,Levoin, Nicolas,Van De Weghe, Pierre
, p. 58 - 61 (2012)
We report a TMSI-promoted Prins cyclization reaction with ketones as carbonyl partners to prepare polysubstituted chiral spirotetrahydropyrans. In the presence of racemic 2-methylcyclohexanone a dynamic kinetic resolution occurred affording one stereoisom
Ring enlargement by alkylated 3-hydroxybutyrates: A synthesis of (12S, 13R)-(-)-12-methyl-13-tetradecanolide
Kraft,Tochtermann
, p. 10875 - 10882 (2007/10/02)
TBS-protected iodo alcohols 6 were prepared via Frater alkylation and applied in the synthesis of optically active macrolides 5 and 10. By ring enlargement of cyclodecanone (7) the superposition molecule 5 of two macrocyclic odorants was synthesized and a conformationally fixed tricyclic macrolide 11 constructed.
Enantiomerically Pure Pyrrolidine Derivatives from trans-4-Hydroxy-L-proline By Electrochemical Oxidative Decarboxylation and Titanium-Tetrachloride-Mediated reaction with Nucleophiles
Renaud, Philippe,Seebach, Dieter
, p. 1704 - 1710 (2007/10/02)
Preparative electrolysis of N-methoxycarbonyl-O-hydroxyproline 4 in MeOH leads to substitution of the COOH by a MeO group (oxidative decarboxylation).The mixture 5 of the two diastereoisomers (ca. 1:1) thus obtained was reacted in CH2Cl2 with nucleophilic silylated compounds (such as allylsilane, silyl cyanide and 1-phenyl-1-silyloxyethane) or with trimethyl phosphite in the presence of TiCl4 to give 2-allyl-, 2-cyano-, 2-(2-oxo-2-phenylethyl)- and 2-phosphono-substituted hydroxypyrrolidines, respectively, with high diastereoselectivities (>= 90 percent, products 6-12).The configuration of two of the products (6/7 and 8/9) was shown to be cis.
