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(-)-Taddol, also known as (-)-2,2',6,6'-tetraaryl-1,1'-biphenols, is a chiral, non-racemic, and C2-symmetric diol compound. It is characterized by its unique structure, which features two phenolic hydroxyl groups and a central biphenyl core. (-)-Taddol has gained significant attention in the field of asymmetric catalysis and organic synthesis due to its ability to form strong hydrogen bonds and its versatile reactivity.

93379-48-7

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93379-48-7 Usage

Uses

Used in Asymmetric Catalysis:
(-)-Taddol is used as a hydrogen-bonding organocatalyst for various applications in asymmetric catalysis. Its strong hydrogen-bonding ability and chiral structure make it an effective catalyst in promoting enantioselective reactions.
Used in the Synthesis of Cyclopropylamines:
(-)-Taddol is used as a reactant or reagent in the synthesis of cyclopropylamines via addition reactions of Grignard reagents to amides. This process allows for the formation of cyclopropylamines with high enantioselectivity, which are important building blocks in the synthesis of pharmaceuticals and agrochemicals.
Used in Enantioswitching of Catalytic Asymmetric Hydroboration:
(-)-Taddol is employed as a catalyst in the enantioswitching of catalytic asymmetric hydroboration. This process enables the selective formation of one enantiomer over the other, which is crucial for the production of enantiomerically pure compounds.
Used in the Synthesis of Derivative Ligands for Asymmetric Hydroformylation:
(-)-Taddol is used as a reactant or reagent in the synthesis of derivative ligands for asymmetric hydroformylation of alkenes. These ligands play a vital role in enhancing the enantioselectivity and efficiency of the hydroformylation process.
Used in Amide-Directed Catalytic Asymmetric Hydroboration of Trisubstituted Alkenes:
(-)-Taddol is utilized as a catalyst in the amide-directed catalytic asymmetric hydroboration of trisubstituted alkenes. This method allows for the selective formation of enantioenriched products, which are valuable intermediates in the synthesis of complex organic molecules.
Used in the Addition of Deactivated Alkyl Grignard Reagents to Aldehydes:
(-)-Taddol is used as a catalyst in the addition of deactivated alkyl Grignard reagents to aldehydes. This process enables the formation of alcohols with high enantioselectivity, which are important for the synthesis of biologically active compounds and pharmaceuticals.

Check Digit Verification of cas no

The CAS Registry Mumber 93379-48-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,3,7 and 9 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 93379-48:
(7*9)+(6*3)+(5*3)+(4*7)+(3*9)+(2*4)+(1*8)=167
167 % 10 = 7
So 93379-48-7 is a valid CAS Registry Number.
InChI:InChI=1/C31H30O4/c1-29(2)34-27(30(32,23-15-7-3-8-16-23)24-17-9-4-10-18-24)28(35-29)31(33,25-19-11-5-12-20-25)26-21-13-6-14-22-26/h3-22,27-28,32-33H,1-2H3/t27-,28-/m1/s1

93379-48-7 Well-known Company Product Price

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  • TCI America

  • (B1614)  (-)-4,5-Bis[hydroxy(diphenyl)methyl]-2,2-dimethyl-1,3-dioxolane  >97.0%(HPLC)

  • 93379-48-7

  • 1g

  • 390.00CNY

  • Detail
  • TCI America

  • (B1614)  (-)-4,5-Bis[hydroxy(diphenyl)methyl]-2,2-dimethyl-1,3-dioxolane  >97.0%(HPLC)

  • 93379-48-7

  • 5g

  • 1,250.00CNY

  • Detail
  • Aldrich

  • (265004)  (4R,5R)-2,2-Dimethyl-α,α,α′,α′-tetraphenyldioxolane-4,5-dimethanol  97%

  • 93379-48-7

  • 265004-1G

  • 1,674.27CNY

  • Detail

93379-48-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name (-)-4,5-Bis[hydroxy(diphenyl)methyl]-2,2-dimethyl-1,3-dioxolane

1.2 Other means of identification

Product number -
Other names [(4R,5R)-5-[hydroxy(diphenyl)methyl]-2,2-dimethyl-1,3-dioxolan-4-yl]-diphenylmethanol

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:93379-48-7 SDS

93379-48-7Relevant articles and documents

Asymmetric ozone oxidation of silylalkenes using a C2- symmetrical dialkoxysilyl group as a chiral auxiliary

Igawa, Kazunobu,Kawasaki, Yuuya,Nishino, Kosuke,Mitsuda, Naoto,Tomooka, Katsuhiko

, p. 9255 - 9258 (2014)

Ozone oxidation of silyl-substituted alkenes, namely silylalkenes, proceeds in an addition-type manner to afford α-silylperoxy carbonyl compounds in good to excellent yields, without the formation of normal ozonolysis products. Herein the ozone oxidation

Highly enantioselective nickel-catalyzed hydrocyanation of disubstituted methylenecyclopropanes enabled by taddol-based diphosphite ligands

Yu, Rongrong,Fang, Xianjie

, p. 594 - 597 (2020/01/21)

A vast range of novel TADDOL-based diphosphite ligands were first synthesized and applied in the nickel-catalyzed asymmetric hydrocyanation of disubstituted methylenecyclopropanes. By employing these new catalysts, the conversion of diverse methylenecyclo

Chiral Aluminum Complex Controls Enantioselective Nickel-Catalyzed Synthesis of Indenes: C?CN Bond Activation

Luan, Yu-Xin,Peng, Qian,Ye, Mengchun,Zhang, Tao,Zheng, Su-Juan

supporting information, p. 7439 - 7443 (2020/03/24)

A chiral aluminum complex controlled, enantioselective nickel-catalyzed domino reaction of aryl nitriles and alkynes proceeding by C?CN bond activation was developed. The reaction provides various indenes, bearing chiral all-carbon quaternary centers, under mild reaction conditions in yields of 32 to 91 percent and ee values within the 73–98 percent range. The reaction mechanism and aspects of stereocontrol were investigated by DFT calculations.

Phosphite-Catalyzed C?H Allylation of Azaarenes via an Enantioselective [2,3]-Aza-Wittig Rearrangement

Motaleb, Abdul,Rani, Soniya,Das, Tamal,Gonnade, Rajesh G.,Maity, Pradip

supporting information, p. 14104 - 14109 (2019/09/06)

A phosphite-mediated [2,3]-aza-Wittig rearrangement has been developed for the regio- and enantioselective allylic alkylation of six-membered heteroaromatic compounds (azaarenes). The nucleophilic phosphite adducts of N-allyl salts undergo a stereoselective base-mediated aza-Wittig rearrangement and dissociation of the chiral phosphite for overall C?H functionalization of azaarenes. This method provides efficient access to tertiary and quaternary chiral centers in isoquinoline, quinoline, and pyridine systems, tolerating a broad variety of substituents on both the allyl part and azaarenes. Catalysis with chiral phosphites is also demonstrated with synthetically useful yields and enantioselectivities.

Enantioselective vinylation of aldehydes with the vinyl Grignard reagent catalyzed by magnesium complex of chiral BINOLs

Wang, Pei,Ma, Guo-Rong,Yu, Sheng-Li,Da, Chao-Shan

supporting information, p. 79 - 86 (2018/12/13)

Enantioselective vinylation of aldehydes via direct catalytic asymmetric Grignard reaction of aldehdyes and the vinyl Grinard reagent is a long-standing challenge. This work demonstrated that the magnesium (S)-3,3′-dimethyl BINOLate enantioselectively catalyze the direct vinylation of aldehydes with the deactivated vinylmagnesium bromide by bis(2-[N,N′-dimethylamino]ethyl) ether (BDMAEE) in the addition of n-butylmagnesium chloride. The highest ee of 63% was achieved up to date.

Chiral Phosphine–Phosphite Ligands in Asymmetric Gold Catalysis: Highly Enantioselective Synthesis of Furo[3,4-d]-Tetrahydropyridazine Derivatives through [3+3]-Cycloaddition

Du, Qingwei,Neud?rfl, J?rg-Martin,Schmalz, Hans-Günther

supporting information, p. 2379 - 2383 (2018/01/27)

The AuI-catalyzed reaction of 2-(1-alkynyl)-2-alken-1-ones with azomethine imines regio- and diastereoselectively affords furo[3,4-d]tetrahydropyridazines in a tandem cyclization/intermolecular [3+3]-cycloaddition process under mild conditions.

Enantioselective Direct Synthesis of syn- and anti-α,β-Dihydroxy γ-Keto Esters Using a Dinuclear Zinc–AzePhenol Complex

Zhang, Zhao-Fei,Yang, Xiao-Chao,Lu, Hui-Jie,Wang, Min-Can

, p. 785 - 793 (2018/02/21)

A one-step enantioselective direct synthesis of both syn- and anti-α,β-dihydroxy γ-keto esters using a dinuclear zinc–AzePhenol complex is presented. This asymmetric α-hydroxyacetate aldol reaction proceeds in moderate to good yield and with excellent ena

An organocatalyst bound α-aminoalkyl radical intermediate for controlled aerobic oxidation of iminium ions

Motaleb, Abdul,Bera, Asish,Maity, Pradip

supporting information, p. 5081 - 5085 (2018/07/29)

A catalyst bound α-aminoalkyl radical intermediate from iminium is developed to control its formation and reactivity with aerobic oxygen. The influence of the catalyst was demonstrated via the ease of radical intermediate formation and its subsequent reactivity, including the first catalyst-controlled enantioselective aerobic oxidation with a chiral phosphite catalyst.

Enantioselective Ni-Al Bimetallic Catalyzed exo -Selective C-H Cyclization of Imidazoles with Alkenes

Wang, Yin-Xia,Qi, Shao-Long,Luan, Yu-Xin,Han, Xing-Wang,Wang, Shan,Chen, Hao,Ye, Mengchun

supporting information, p. 5360 - 5364 (2018/05/01)

A Ni-Al bimetallic catalyzed enantioselective C-H exo-selective cyclization of imidazoles with alkenes has been developed. A series of bi- or polycyclic imidazoles with β-stereocenter were obtained in up to 98% yield and >99% ee. The bifunctional SPO ligand-promoted bimetallic catalysis proved to be critical to this challenging stereocontrol.

Based on the chiral diamine spiro skeleton chiral phosphorus nitrile catalyst, preparation method and application thereof

-

Paragraph 0064; 0067, (2017/08/16)

The invention provides a chiral phosphazene catalyst based on a spiro framework adopting chiral diamine, a preparation method and an application of the chiral phosphazene catalyst. The catalyst has a structure represented in the general formula: (RX-)3P=NR', chiral groups are introduced through R and R', and the catalyst has a structure with two seven-membered rings in centered connection through phosphorspirol. Optically pure tartaric acid or substituted hexahydrophthalic acid or 1,2-cyclopentanedicarboxylicacid,(1R,2S)-rel- is taken as a raw material, chiral diamine is generated through esterification, a Grignard reaction, an optional chlorination reaction, an azido reaction and a reduction reaction of the raw material, then chiral diamine and phosphorus pentachloride have a spirocyclization reaction to construct a phosphorspirol-centered screw ring, the chiral phosphazene molecular catalyst is obtained under the alkaline condition, and a method for substituting azido for hydroxyl directly has good application and popularization value. The catalyst has the advantages of high catalysis efficiency, good stereoselectivity, mild conditions, economy, environmental protection, simplicity and convenience in operation and the like as well as popularization and application prospects.

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