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2H-Pyran, tetrahydro-2,2-diphenyl-, also known as 2,2-diphenyltetrahydropyran or DPTHP, is a cyclic organic compound with the molecular formula C16H18O. It is a colorless to pale yellow liquid with a mild, aromatic odor. 2H-Pyran, tetrahydro-2,2-diphenyl- is a derivative of the parent heterocycle pyran, which is a six-membered ring containing one oxygen atom. The tetrahydro prefix indicates that the molecule has undergone hydrogenation, resulting in four additional hydrogen atoms attached to the ring. The diphenyl group consists of two phenyl rings (C6H5) bonded to the same carbon atom within the pyran ring. DPTHP is commonly used as a protecting group in organic synthesis, particularly in the protection of alcohols and other functional groups, due to its stability and ease of removal under mild acidic conditions.

889-54-3

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889-54-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 889-54-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,8 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 889-54:
(5*8)+(4*8)+(3*9)+(2*5)+(1*4)=113
113 % 10 = 3
So 889-54-3 is a valid CAS Registry Number.

889-54-3SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 2,2-diphenyloxane

1.2 Other means of identification

Product number -
Other names Tetrahydro-2,2-diphenyl-2H-pyran

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:889-54-3 SDS

889-54-3Downstream Products

889-54-3Relevant academic research and scientific papers

Lactones, XX. - Grignardation Followed by Phase-Transfer Oxidation: A Convenient Synthesis of δ,δ-Disubstituted δ-Lactones from δ-Valerolactone

Lehmann, Jochen,Marquardt, Norbert

, p. 827 - 832 (2007/10/02)

A Grignardation-oxidation sequence, without isolation of intermediates, easily transfers δ-valerolactone (4) into Δ,δ-disubstituted δ-lactones 6.The synthesis of δ,δ-diphenyl-δ-valerolactone (6a) served as an exsample for a detailed investigation of the r

One-pot synthesis of diarylalkylcarbinols and substituted derivatives through carbon monoxide insertion reactions into aryllithiums

Vitale, Arturo A.,Doctorovich, F.,Nudelman, N. Sbarbati

, p. 9 - 18 (2007/10/02)

The carbonylation of a THF solution of aryllithium (aryl = Ph, o-anisyl) in the presence of an alkyl bromide, RBr; at atmospheric pressure and -78 deg C, affords diarylalkylcarbinols in good yields.Alkyl chlorides do not react under similar experimental conditions.This feature makes the reaction particularly useful for the synthesisof alcohols functionalized in the alkyl chain through subsequent reactions of the diaryl(chloro)alkylcarbinols.The procedure can also be adapted to afford substituted cyclic ethers.If the reaction is carried out in the presence of dibromoalkanes, only one bromine atom reacts, affording diaryl(bromo)alkylcarbinols which are useful intermediates.With secondary and tertiary alkyl bromides diaryl alkyl ethers are obtained in variable yields.

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