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Sigma-Aldrich

(S)-(−)-α,α-Diphenyl-2-pyrrolidinemethanol

99%

Synonym(s):

(S)-(−)-2-(Diphenylhydroxymethyl)pyrrolidine, α,α-Diphenyl-L-prolinol

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About This Item

Empirical Formula (Hill Notation):
C17H19NO
CAS Number:
112068-01-6
Molecular Weight:
253.34
MDL number:
MFCD00075506
UNSPSC Code:
12352005
PubChem Substance ID:
24862899
NACRES:
NA.22

Quality Level

200

Assay

99%

form

solid

optical activity

[α]20/D −67°, c = 3 in chloroform

mp

77-80 °C (lit.)

SMILES string

OC([C@@H]1CCCN1)(c2ccccc2)c3ccccc3

InChI

1S/C17H19NO/c19-17(16-12-7-13-18-16,14-8-3-1-4-9-14)15-10-5-2-6-11-15/h1-6,8-11,16,18-19H,7,12-13H2/t16-/m0/s1

InChI key

OGCGXUGBDJGFFY-INIZCTEOSA-N

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General description

(S)-(-)-α,α-Diphenyl-2-pyrrolidinemethanol is a bifunctional organocatalyst.

Application

(S)-(-)-α,α-Diphenyl-2-pyrrolidinemethanol (DPPM) may be used in the following processes:
  • DPPM reacts with catecholborane to form a spiroborate ester, which can be an efficient catalyst for the synthesis of enantiopure alcohols by borane reduction of acetophenone.
  • The catalyst generated in situ by reacting DPPM with borane-diethylaniline, can efficiently catalyze the enantioselective reduction of 2′-fluoroacetophenone.
  • Mesoporous SBA-15 silica functionalized with DPPM can catalyze the addition of diethylzinc to benzaldehyde to form (S)-1-phenyl-propanol.
Used to prepare the corresponding oxazaborolidines for the borane-mediated asymmetric reduction of ketones.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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(S)-(−)-2-Methyl-CBS-oxazaborolidine ≥95%

Sigma-Aldrich

649309

(S)-(−)-2-Methyl-CBS-oxazaborolidine

Highly enantioselective carbonyl reduction with borane catalyzed by chiral spiroborate esters derived from chiral 1, 2-aminoalcohols.
Stepanenko V, et al.
Tetrahedron Asymmetry, 17(1), 112-115 (2006)
Nanoporous silica-supported organocatalyst: a heterogeneous and green hybrid catalyst for organic transformations.
Rostamnia S and Doustkhah E.
Royal Society of Chemistry Advances, 4(54), 28238-28248 (2014)
Alessandra Lattanzi
Organic letters, 7(13), 2579-2582 (2005-06-17)
[reaction: see text] An operationally simple and mild protocol for the catalytic enantioselective epoxidation of alpha,beta-unsaturated ketones has been estabilished using commercially available alpha,alpha-diphenyl-l-prolinol as bifunctional organocatalyst and tert-butyl hydroperoxide (TBHP) as oxidant. The epoxides have been obtained in good
The enantioselective reduction of 2'-fluoroacetophenone utilizing a simplified CBS-reduction procedure.
Garrett CE, et al.
Tetrahedron Asymmetry, 13(13), 1347-1349 (2002)
Synlett, 929-929 (1993)

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