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905259

Sigma-Aldrich

Rh2(S-PTAD)4

Synonym(s):

Tetrakis[(S)-(+)-(1-adamantyl)-(N-phthalimido)acetato]dirhodium(II)

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250 MG
$432.00

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250 MG
$432.00

About This Item

Empirical Formula (Hill Notation):
C80H80N4O16Rh2
CAS Number:
909389-99-7
Molecular Weight:
1559.32
MDL number:
MFCD09839140
UNSPSC Code:
12161600
NACRES:
NA.22

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form

powder or crystals

mp

>300 °C

SMILES string

[Rh]([Rh](OC(=O)[C@@H](N%19C(=O)c%20c(cccc%20)C%19=O)C%17%16C[C@@H]%18C[C@@H](C[C@@H](C%18)C%17)C%16)OC(=O)[C@@H](N%14C(=O)c%15c(cccc%15)C%14=O)C%12%11C[C@@H]%13C[C@@H](C[C@@H](C%13)C%12)C%11)(OC(=O)[C@@H](N9C(=O)c%10c(cccc%10)C9=O)C76C[C@@H]8C[C@@H](C[C@

InChI

1S/4C20H21NO4.2Rh/c4*22-17-14-3-1-2-4-15(14)18(23)21(17)16(19(24)25)20-8-11-5-12(9-20)7-13(6-11)10-20;;/h4*1-4,11-13,16H,5-10H2,(H,24,25);;/q;;;;2*+2/p-4/t4*11-,12+,13-,16-,20?;;/m1111../s1

InChI key

SGEDWOHAUXKUGM-PAPHCAFZSA-J

Application

This chiral Rh(II) dimer was developed in the Davies lab to perform asymmetric carbene and nitrene reactions (C-H insertion, cyclopropanation, aziridination, C-H amination) with high regio- and stereocontrol.

Other Notes

Dirhodium Tetracarboxylate Derived from Adamantylglycine as a Chiral Catalyst for Carbenoid Reactions

Dirhodium Tetracarboxylates Derived from Adamantylglycine as Chiral Catalysts for Enantioselective C-H Aminations

Enantioselective Synthesis of Trifluoromethyl-?Substituted Cyclopropanes

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Rh2(S-PTAD)4

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Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCJ6920

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Yan Su et al.
Organic letters, 18(17), 4356-4359 (2016-08-17)
Optically active cis-cyclopropane carboxylates are prepared via the Rh2(S-PTAD)4-catalyzed cyclopropanation of α-silyl styrenes with aryl diazoacetates followed by desilylation of the resulting silyl cyclopropane carboxylates. The conjugation of the aryl ring with C═C bond and π stacking are proposed for
Romain J Lepage et al.
Chemical communications (Cambridge, England), 53(30), 4219-4221 (2017-03-31)
Acyclic methylene acetals bearing two diazoester subunits have been converted to [5,5]-spiroacetals via bidirectional C-H insertion under Rh(ii) catalysis. Using a chiral Rh(ii) catalyst, the major diastereomer can be produced in high enantiomeric excess (89%).
Chen Kong et al.
Journal of the American Chemical Society (2016-10-05)
A mechanism study to identify the elements that control the chemoselectivity of metal-catalyzed N-atom transfer reactions of styryl azides is presented. Our studies show that the proclivity of the metal N-aryl nitrene to participate in sp3-C-H bond amination or electrocyclization
Justin R Denton et al.
Chemical communications (Cambridge, England), (10), 1238-1240 (2008-03-01)
Nitrile-substituted cyclopropanes are readily synthesized in a stereocontrolled fashion from the intermolecular cyclopropanation between 2-diazo-2-phenylacetonitrile and electron-rich olefins, catalyzed by the chiral dirhodium complex, Rh(2)(S-PTAD)(4).
Brett D Schwartz et al.
Journal of the American Chemical Society, 131(23), 8329-8332 (2009-05-19)
The total synthesis of (-)-5-epi-vibsanin E (2) has been achieved in 18 steps. The synthesis combines the rhodium-catalyzed [4 + 3] cycloaddition between a vinylcarbenoid and a diene to rapidly generate the tricyclic core with an effective end game strategy
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