55441-97-9

Basic information

• Product Name: Carbamothioic acid, dimethyl-, O,O-1,1-binaphthalene-2,2-diyl ester
• Synonyms: Carbamothioic acid, dimethyl-, O,O-1,1-binaphthalene-2,2-diyl ester
• CAS NO: 55441-97-9
• Molecular Formula: C₂₆H₂₄N₂O₂S₂
• Molecular Weight: 460.61
• Mol File: 55441-97-9.mol
• Article Data: 7

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Carbamothioic acid, dimethyl-, O,O-1,1-binaphthalene-2,2-diyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Carbamothioic acid, dimethyl-, O,O-1,1-binaphthalene-2,2-diyl ester(55441-97-9)
• EPA Substance Registry System: Carbamothioic acid, dimethyl-, O,O-1,1-binaphthalene-2,2-diyl ester(55441-97-9)

Safety Data

• Hazardous Substances Data: 55441-97-9(Hazardous Substances Data)

Upstream product

• 79-44-7 N,N-Dimethylcarbamoyl chloride 
• 602-09-5 1,1'-bi-2-naphthol 
• 16420-13-6 N,N-Dimethylthiocarbamoyl chloride 

Downstream Products

• 194-65-0 1,1'-binaphthothiophene 
• 147923-23-7 <1,1'-Binaphthalene>-2,2'-diyl S,S-bis(N,N-dimethylthiocarbamate) 
• 604-53-5 1,1'-bisnaphthalene 
• 348617-10-7 (S)-diphenyl(2'-phenyl-[1,1'-binaphthalen]-2-yl)phosphine 

Relevant articles and documents

Dinaphtho[2,1-b:1′,2′- d] thiophenes as high refractive index materials exploiting the potential characteristics of "dynamic thiahelicenes"

Dinaphtho[2,1-b:1′,2′-d]thiophene (DNT) is one of the "dynamic thiahelicenes"that is obtained as a racemate due to its low energy barrier for enantiomerization. A careful evaluation of both the metastable DNT film and the stable films of DNT/polymethyl methacrylate (PMMA) blends revealed that DNT has an extra-high refractive index of 1.808 at 633 nm, which is rarely achieved in organic small molecules. The fundamental factors responsible for the unusual observation of DNT were explored by comparing the properties of DNT with those of a flat-shaped dibenzothiophene (DBT) both in experiments and DFT calculations, and by analysing them using the Lorentz-Lorenz equation. It became clear that the unique properties of DNT were based on its flexible dynamic thiahelicene structure, leading to metastable film-forming ability, high compatibility with PMMA, and exhibition of an extra-high refractive index caused by dense packing in the amorphous film. Chemical modification of DNT provided new halogen-free vinyl monomers, which could be easily polymerized to form vinyl polymers with high refractive indices of 1.72-1.74, as well as film-forming ability, high thermal stability, and high transparency in the visible region. Thus, we could demonstrate that the DNT structure is a new promising candidate for organic polymeric high refractive index materials.

Practical synthetic approach to chiral sulfonimides (CSIs) - Chiral bronsted acids for organocatalysis

A general approach to the synthesis of optically pure 3,3'diaryl chiral sulfonimides (CSIs) from racemic BINOL has been developed. ortho-Lithiation is directed by the sulfonyl groups, and the resulting dihalides serve as the common precursors for the aryl-substituted CSIs.

Conformational polymorphism and thermorearrangement of 2,2′-bis-O-(N,N-dimethylthiocarbamato)-1,1′-binaphthalene. A facile synthesis of 1,1′-binaphthalene-2,2′-dithiol

The title compound was found to exhibit conformational polymorphism which greatly influenced the efficiency of the thermorearrangement to 2,2′-bis-S-(N,N-dimethylthiocarbamato)-1,1′-binaphthalene. Recognition of this phenomenon has allowed a reproducible synthesis of 1,1′-binaphthalene-2,2′ dithiol.