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118418-20-5

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118418-20-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 118418-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,4,1 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 118418-20:
(8*1)+(7*1)+(6*8)+(5*4)+(4*1)+(3*8)+(2*2)+(1*0)=115
115 % 10 = 5
So 118418-20-5 is a valid CAS Registry Number.

118418-20-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-phenylsulfanyl-1,3-dioxane

1.2 Other means of identification

Product number -
Other names -

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:118418-20-5 SDS

118418-20-5Relevant articles and documents

(Dialkoxymethyl)lithiums: Generation, Stability, and Synthetic Transformations

Shiner, Christopher S.,Tsunoda, Tetsuto,Goodman, Burton A.,Ingham, Stephen,Lee, Shi-hung,Vorndam, Paul E.

, p. 1381 - 1392 (2007/10/02)

(Dialkoxymethyl)lithium reagents, (RO)2CHLi, can be generated simply and efficiently and employed as synthetically useful one-carbon nucleophiles.Reductive lithiation of phenylthio-substituted precursors, (RO)2CHSPh, at -95 deg C or transmetalation of tri-n-butylstannyl compounds, (RO)2CHSn(n-Bu)3, at -110 to -111 deg C afforded the acyclic species (MeO)2CHLi (4) and (EtO)2CHLi (5).The cyclic reagents, 2-lithio-1,3-dioxolane (6) and 2-lithio-1,3-dioxane (7), were similarly prepared at -78 deg C by reductive lithiation or transmetalation.Reactions of(dialkoxymethyl)lithiums with electrophiles, including aldehydes, ketones, 2-cyclohexen-1-one (1,2- or 1,4-addition as desired), dimethyl sulfate, primary alkyl bromides, epoxides, oxetane, and n-Bu3SnCl, afforded structurally diverse, functionalized acetals.In these experiments, which emphasized transformations of lithiodioxane 7, yields of products generally exceeded 90percent.The thermal stability of each reagent was investigated at several temperatures.The acyclic compounds 4 and 5 decompose rapidly even at -95 deg C, whereas lithiodioxolane 6 and dioxane derivative 7 are relatively stable at -78 and -45 deg C, respectively.These striking differences in solution lifetimes can be rationalized in terms of alternative decomposition pathways and steric and stereoelectronic factors.The primary products of thermal decomposition of 7 can be ascribed to formation of a reactive carbene or carbenoid via α-elimination.Equilibration experiments established that (dialkoxymethyl)lithium 7 is more stable thermodynamically than the α-monoalkoxy species lithium, in accord with previous ab initio calculations.

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