[EN] PROCESSES FOR THE STEREOSELECTIVE PREPARATION OF P-CHIRAL FOUR -COORDINATED PHOSPHORUS BORANE COMPOUNDS AND P-CHIRAL THREE-COORDINATED PHOSPHORUS COMPOUNDS<br/>[FR] PROCÉDÉS POUR LA PRÉPARATION STÉRÉOSÉLECTIVE DE COMPOSÉS DE BORANE DE PHOSPHORE À QUATRE COORDINATIONS P-CHIRAUX ET DE COMPOSÉS PHOSPHORÉS À TROIS COORDINATIONS P CHIRAUX
申请人:UNIV DUBLIN
公开号:WO2012113889A1
公开(公告)日:2012-08-30
Processes for the stereoselective preparation of P-chiral four-coordinated phosphorus borane compounds and P-chiral three-coordinated phosphorus compounds.
Synthesis of Chiral 2-Aroyl-1-tetralols: Asymmetric Transfer Hydrgenation of 2-Aroyl-1-tetralones via Dynamic Kinetic Resolution
作者:Yun Wu、Zhicong Geng、Jinjin Bai、Yawen Zhang
DOI:10.1002/cjoc.201180267
日期:2011.7
The dynamickineticresolution of 2‐aroyl‐1‐tetralones was achieved viaasymmetrictransfer hydrogenation using (S,S)‐RuCl(p‐cymene)TsDPEN (TsDPEN=N‐(tosyl)‐1,2‐diphenylethylenediamine) in formic acid/triethyl‐ amine (5:2, molar ratio), afforded the desired products in good yields (up to 85%) with diastereomeric ratio up to >99:1 and high enantiomeric excesses (up to >99%). The absolute configuration
A process for the stereoselective preparation of a P-chiral four-co-ordinated phosphorus compound, the process comprising reacting a first reactant selected from the group consisting of a chiral alcohol, chiral amine or chiral thiol, with a second reactant comprising a P-chiral three-co-ordinated phosphorus compound, in the presence of an electrophile.
METHOD OF PRODUCING A POLYMERIC MATERIAL, POLYMER, MONOMERIC COMPOUND AND METHOD OF PREPARING A MONOMERIC COMPOUND
申请人:Rolfe James
公开号:US20090156706A1
公开(公告)日:2009-06-18
A method of producing a polymeric material, said method including the step of subjecting a starting material which includes a group of sub-formula (XIII)
where R
16
is selected from hydrogen, halo, nitro, hydrocarbyl, optionally substituted or interposed with functional groups, or
R
2
and R
3
are independently selected from (CR
6
R
7
)
n
or a group CR
8
R
9
, CR
6
R
7
CR
8
R
9
or CR
8
R
9
CR
6
R
7
where n is 0, 1 or 2, R
6
and R
7
are independently selected from hydrogen or alkyl, and either one of R
8
or R
9
is hydrogen and the other is an electron withdrawing group, or R
8
or R
9
together form an electron withdrawing group; and
R
4
and R
5
are independently selected from CH or CR
1o
where CR
1o
is an electron withdrawing group,
the dotted lines indicate the presence or absence of a bond, X
1
is a group CX
2
X
3
where the dotted line bond to which it is attached is absent and a group CX
2
where the dotted line bond to which it is attached is present, Y
1
is a group CY
2
Y
3
where the dotted line bond to which it is attached is absent and a group CY
2
where the dotted line bond to which it is attached is present, and X
2
and X
3
, and, if present, Y
2
and Y
3
, are each a C
1
to C
4
alkyl group;
to conditions under which polymerisation of the starting material occurs.
A process for the stereoselective preparation of a P-chiral four-co-ordinated phosphorus compound, the process comprising reacting a first reactant selected from the group consisting of a chiral alcohol, chiral amine or chiral thiol, with a second reactant comprising a P-chiral three-co-ordinated phosphorus compound, in the presence of an electrophile.