902594
Diisopropyl 2-oxomalonate
≥95%
Synonym(s):
Di-isopropyl ketomalonate, Kurti amination reagent, Kurti amine umpolung reagent
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About This Item
Empirical Formula (Hill Notation):
C9H14O5
CAS Number:
Molecular Weight:
202.20
UNSPSC Code:
12352101
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Assay
≥95%
form
liquid
refractive index
n/D 1.414
density
1.036
InChI
1S/C9H14O5/c1-5(2)13-8(11)7(10)9(12)14-6(3)4/h5-6H,1-4H3
InChI key
ISAKWFYKUTYAQE-UHFFFAOYSA-N
Application
As demonstrated by Laszlo Kürti′s lab, the sterically hindered di-isopropyl keto malonate and its hydrate (902764) are excellent N-umpolung reagents for both aliphatic and aromatic primary amines via a simple condensation reaction. The steric hindrance in ester moiety allows the preparation of the corresponding iminomalonates in high yield and lends these imines sufficient hydrolytic stability during the purification process. The N-alkyl as well as N-aryl iminomalonates act as singly N-electrophilic reagents towards strong C-nucleophiles such as alkyl- and arylmetals (e.g., Grignard reagents). Thus, unsymmetrical secondary amines may be readily prepared at low temperatures and in the absence of transition metal catalysts.
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Product No.
Description
Pricing
Storage Class Code
10 - Combustible liquids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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Electrophilic cyclization of doubly activated imines with Lewis acids and trialkylsilyl triflates. Synthesis of pyrrole and azepine derivatives.
Tietze L F, et al.
European Journal of Organic Chemistry, 6, 559-564 (1989)
Ying Zhi et al.
Chemical communications (Cambridge, England), 52(97), 14011-14014 (2016-11-18)
The asymmetric synthesis of highly functionalized pyrrolidine derivatives with three contiguous stereogenic centers and bearing a trifluoromethyl group has been developed through an organocatalytic domino Michael/Mannich [3+2] cycloaddition sequence. Employing a commercially available secondary amine as the catalyst, the scalable
Dialkyl mesoxalates by ozonolysis of dialkyl benzalmalonates: preparation of dimethyl mesoxalate.
Organic Syntheses, 71 (1993)
Facile synthesis of 1,2,3-tricarbonyls from 1,3-dicarbonyls mediated by cerium(IV) ammonium nitrate.
Sivan A, et al.
Tetrahedron Letters, 55, 1890-1893 (2014)
Intramolecular electrophilic cyclization of double activated imines induced by Lewis acids and trialkylsilyl triflates. An efficient route to substituted piperidines and annulated piperidine lactones.
Tietze L F, et al.
European Journal of Organic Chemistry, 122, 997-1002 (1989)
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