Results 61 to 70 of about 46,609 (242)

Ti-MCM-41 materials synthesised at room temperature as catalysts for cyclisation of (±)-citronellal” [PDF]

, 2009
In the present work we extend the applicability of those Ti-MCM-41 materials, as heterogeneous catalysts, to produce an important intermediate, isopulegol, from the cyclisation of citronellal. The use of this kind of materials appears to be a good option
Carrott, Manuela, Carrott, Peter, Castilho, P., Galacho, Cristina, Ramos, S.S., Rodrigues, A.I.   +5 more
core  

Stereoselective synthesis of hydroxylated 3-aminoazepanes using a multi-bond forming, three-step tandem process [PDF]

, 2012
A multi-bond forming, three-step tandem process involving a palladium(II)-catalysed Overman rearrangement and a ring closing metathesis reaction has been utilised for the efficient synthesis of a 2,3,6,7-tetrahydro-3-amidoazepine.
Ahmad, Ahmad, Anderson, Anderson, Anderson, Andrew Sutherland, Bernstein, Blades, Blanchette, Cant, Cardillo, Chapman, Cini, Cook, Cutri, Cutri, Delmore, Donohoe, Donohoe, Donohoe, Elhalem, Fürstner, Gilmet, Henbest, Horbal, Ireland, Jobson, Jobson, Kantorowski, Kazi, Kulanthaivel, Kurihara, Lampe, Louvel, Maier, Masse, McGonagle, Miyabe, Miyabe, Moriwake, Nicolaou, Nomura, O'Brien, Overman, Pimlott, Riber, Sajjad Ahmad, Sanford, Scholl, Schwab, Schwab, Srivastava, Stevens, Swift, Swift, Tietze, Trost, Valle, Watson, Würdemann, Yar, Yaragorla, Yet, Zaed   +63 more
core   +1 more source

Catalytic Diastereoselective Petasis Reactions [PDF]

Angewandte Chemie, 2011
AbstractPetasis reaction of boronates, protected α‐hydroxy aldehydes and amines is described.
Stuart L. Schreiber, Giovanni Muncipinto, Philip N. Moquist, Scott E. Schaus   +3 more
openaire   +4 more sources

An efficient synthesis of the guaiane sesquiterpene (−)-isoguaiene by domino metathesis

Beilstein Journal of Organic Chemistry, 2019
(−)-Isoguaiene was prepared from (S)-citronellal in only 9–10 steps with good overall yields. Either a trienyne or a dienediyne metathesis and highly diastereoselective organocatalytic Michael additions of aldehydes derived from (S)-citronellal served as
Yuzhou Wang, Ahmed F. Darweesh, Patrick Zimdars, Peter Metz   +3 more
doaj   +1 more source

Diastereoselective reactions of enolates [PDF]

Pure and Applied Chemistry, 1996
Abstract
Dietmar Galle, Sundarababu Baskaran, Hubert Sacha, Manfred Braun   +3 more
openaire   +1 more source

Crystal and molecular structure of bis(8-phenylmenthyl) 2-(2-methyl-5-oxo-3-cyclohexen-1-yl)propandioate, C\u3csub\u3e42\u3c/sub\u3eH\u3csub\u3e54\u3c/sub\u3eO\u3csub\u3e5\u3c/sub\u3e• CH\u3csub\u3e3\u3c/sub\u3eCN [PDF]

, 2006
The X-ray crystal structure of the title compound, as crystallized from acetonitrile-water was determined. The relative stereochemistry of the cyclohexenone ring with respect to the 8-phenylmenthyl esters was determined.
Bennett, Dennis W., Chaudhury, Subhabrata, Donaldson, William, Haworth, Daniel T., Siddiquee, Tasneem A.   +4 more
core   +1 more source

Chiral Syn-1,3-diol Derivatives via a One-Pot Diastereoselective Carboxylation/ Bromocyclization of Homoallylic Alcohols

iScience, 2018
Summary: Chiral syn-1,3-diols are fundamental structural motifs in many natural products and drugs. The traditional Narasaka-Prasad diastereoselective reduction from chiral β-hydroxyketones is an important process for the synthesis of these ...
Guanxin Huang, Minjie Liu, Fangjun Xiong, Ge Meng, Yuan Tao, Yan Wu, Haihui Peng, Fener Chen   +7 more
doaj  

Synthesis of dihydrofurans using nano-CuFe2O4@Chitosan

Journal of Saudi Chemical Society, 2017
An efficient multi-component synthesis of dihydrofurans is described by a one-pot condensation reaction of 2,4′-dibromoacetophenone, aromatic aldehydes and dimedone using nano-CuFe2O4@Chitosan under reflux conditions in ethanol.
Javad Safaei-Ghomi, Hossein Shahbazi-Alavi   +1 more
doaj  

Total Asymmetric Synthesis of Glycomimetics and Polypropionates of Biological Interest

CHIMIA, 2008
Using readily available chiral auxiliaries such as (+)- and (?)-camphanic acid, (R,R)- and (S,S)-tartaric acid derivatives (e.g. RADO(R)-COCl, SADO(R)-COCl) efficient diastereoselective syntheses of rare sugars and glycomimetics have been ...
Pierre Vogel
doaj   +1 more source

A Shortened Synthesis of Optically Pure Tricarbonyl[methyl (2E,4E)-6-oxo-2,4-hexadienoate]Iron Leading to Improved Yield [PDF]

, 2010
The (+)- and (–)-enantiomers of tricarbonyl[methyl (2E,4E)-6-oxo-2,4-hexadienoate]iron are prepared in 4 steps from commercially available hexadienal (26% and 25% yields, respectively)
Donaldson, William, Lindeman, Sergey, Pandey, Rajesh K.   +2 more
core   +2 more sources