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2H-Naphtho[1,2-b]pyran, 3,4-dihydro-2-phenyl-(9CI) is a chemical compound with the molecular formula C17H14O. It belongs to the class of organic compounds known as naphthopyrans, which are derivatives of the naphthalene ring system fused with a pyran ring. This specific compound features a dihydronaphtho[1,2-b]pyran core, with a phenyl group attached at the 2-position. The compound is characterized by its unique structure, which may exhibit interesting photophysical and chemical properties. It is primarily used in research and development, particularly in the synthesis of various organic compounds and pharmaceuticals. Due to its complex structure, it is essential to handle 2H-Naphtho[1,2-b]pyran,3,4-dihydro-2-phenyl-(9CI) with care and follow proper safety protocols.

206763-45-3

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206763-45-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 206763-45-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,6,7,6 and 3 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 206763-45:
(8*2)+(7*0)+(6*6)+(5*7)+(4*6)+(3*3)+(2*4)+(1*5)=133
133 % 10 = 3
So 206763-45-3 is a valid CAS Registry Number.

206763-45-3Downstream Products

206763-45-3Relevant academic research and scientific papers

Enantioselective synthesis of chromanes by iridium-catalyzed asymmetric hydrogenation of 4H-chromenes

Valla, Carine,Baeza, Alejandro,Menges, Frederik,Pfaltz, Andreas

experimental part, p. 3167 - 3171 (2009/06/17)

Iridium complexes of chiral oxazoline-based P,N-ligands proved to be efficient catalysts for the enantioselective hydrogenation of 2-aryl- and 2-alkyl-4H-chromenes. The best results were obtained with a ligand derived from threonine (ThrePHOX), which induced ee values of 95% to >99% in the hydrogenation of 2-methyl-, 2-cyclohexyl- and various 2-aryl-substituted chromenes. Georg Thieme Verlag Stuttgart.

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