ChemicalBook > Product Catalog >Organic Chemistry >Organosulfur compounds >Lawesson's Reagent

Lawesson's Reagent

Lawesson's Reagent Structure
CAS No.
19172-47-5
Chemical Name:
Lawesson's Reagent
Synonyms
LAWESSON REAGENT;LR;242-855-4;Lawesson's;Lawesson`s reagentsulfide dimer;2,4-BIS(4-METHOXYPHENYL)-2,4-DITHIOXO-1,3,2,4-DITHIADIPHOSPHETANE;2,4-BIS(4-METHOXYPHENYL)-1,3,2,4-DITHIADIPHOSPHETANE-2,4-DISULFIDE;2,4-BIS(4-METHOXYPHENYL)-1,3-DITHIA-2,4-DIPHOSPHETANE-2,4-DISULFIDE;AURORA KA-1707;awesson's Reag
CBNumber:
CB8128537
Molecular Formula:
C14H14O2P2S4
Molecular Weight:
404.47
MOL File:
19172-47-5.mol
MSDS File:
SDS
Modify Date:
2024/8/7 10:42:15

Lawesson's Reagent Properties

Melting point 228-230 °C(lit.)
Boiling point 525.8±60.0 °C(Predicted)
Density 1.48±0.1 g/cm3(Predicted)
storage temp. Inert atmosphere,2-8°C
solubility Chloroform (Slightly)
form Powder
color White to almost white
Water Solubility Decomposition
Sensitive Moisture Sensitive
Merck 14,5391
BRN 1024888
InChI InChI=1S/C14H14O2P2S4/c1-15-11-3-7-13(8-4-11)17(19)21-18(20,22-17)14-9-5-12(16-2)6-10-14/h3-10H,1-2H3
InChIKey CFHGBZLNZZVTAY-UHFFFAOYSA-N
SMILES S1P(=S)(C2=CC=C(OC)C=C2)SP1(=S)C1=CC=C(OC)C=C1
CAS DataBase Reference 19172-47-5(CAS DataBase Reference)
EPA Substance Registry System 1,3,2,4-Dithiadiphosphetane, 2,4-bis(4-methoxyphenyl)-, 2,4-disulfide (19172-47-5)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS02
Signal word  Danger
Hazard statements  H261
Precautionary statements  P231+P232-P422
Hazard Codes  Xn-F,Xi,Xn,F
Risk Statements  20/21/22-15/29-37
Safety Statements  8-43-36/37-22-38-7/8
RIDADR  3278
WGK Germany  3
13-21
TSCA  Yes
HazardClass  4.3
PackingGroup  III
HS Code  29349990
NFPA 704
2
2 1
W

Lawesson's Reagent price More Price(11)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) 227439 Lawesson reagent 97% 19172-47-5 25G ₹1872.73 2022-06-14 Buy
Sigma-Aldrich(India) 227439 Lawesson reagent 97% 19172-47-5 10G ₹2045.93 2022-06-14 Buy
Sigma-Aldrich(India) 227439 Lawesson reagent 97% 19172-47-5 100G ₹8237.83 2022-06-14 Buy
ALFA India ALF-A14530-36 Thermo Scientific™ Lawesson's Reagent, 97% 19172-47-5 500g ₹34530 2022-05-26 Buy
ALFA India ALF-A14530-22 Thermo Scientific™ Lawesson's Reagent, 97% 19172-47-5 100g ₹15469 2022-05-26 Buy
Product number Packaging Price Buy
227439 25G ₹1872.73 Buy
227439 10G ₹2045.93 Buy
227439 100G ₹8237.83 Buy
ALF-A14530-36 500g ₹34530 Buy
ALF-A14530-22 100g ₹15469 Buy

Lawesson's Reagent Chemical Properties,Uses,Production

Chemical Properties

light yellow to beige powder

Uses

Lawesson's reagent is a thiation agent used to convert carbonyl compounds into thiocarbonyls. It is also used to thionate enones, esters, lactones, amides, lactams and quinones. Further, it is used to prepare thiols from alcohols. It is associated with silver perchlorate and utilized as and oxophilic Lewis acid catalyst for Diels-Alder reaction of dienes with alfa, beta-unsaturated aldehydes.

General Description

Lawesson′s reagent is generally used as a thiation agent in organic synthesis for the conversion of oxygen functionalities into their thio analogs. It facilitates the conversion of the carbonyl group to thiocarbonyl group as well as carbon-oxygen single bond into a carbon-sulfur single bond.

Solubility in organics

Lawesson's reagent is modestly sol boiling organic solvents such as toluene, chlorobenzene, anisole, dimethoxyethane.

storage

Lawesson's reagent can be stored for months at rt if moisture is excluded. Prolonged heating in solution causes decomposition (polymerization). It is toxic and should be handled under a fume hood since hazardous H2S is easily liberated with moisture.

Global( 360)Suppliers
Supplier Tel Country ProdList Advantage Inquiry
GLR Innovations +91 9891111994 New Delhi, India 4542 58 Inquiry
NSR Laboratories Pvt. Ltd. +91-9866989891 +91-9000457345 Hyderabad, India 196 58 Inquiry
J S LABS +91-7330612784 +91-7330612784 Tamil Nadu, India 160 58 Inquiry
AMINO ORGANICS +919866989891 Hyderabad, India 275 58 Inquiry
JSK Chemicals +919879767970 Gujarat, India 3756 58 Inquiry
Tosco Pharmachem Pvt Ltd +91-9573336677 +91-9573336677 Telangana, India 49 58 Inquiry
Lakshmi Farmachem +91-9948795885 +91-9550886476 Telangana, India 407 58 Inquiry
CLEARSYNTH LABS LTD. +91-22-45045900 Hyderabad, India 6351 58 Inquiry
CHEMSWORTH +91-261-2397244 New Delhi, India 6707 30 Inquiry
A.J Chemicals 91-9810153283 New Delhi, India 6124 58 Inquiry

Related articles

AURORA KA-1707 4-METHOXYPHENYLTHIOPHOSPHORIC CYCLIC DI(THIOANHYDRIDE) 2,4-DI(4-METHOXYPHENYL)-1,3,2LAMBDA-5,4LAMBDA-5-DITHIADIPHOSPHETANE-2,4-DITHIONE P-METHOXYPHENYLTHIONOPHOSPHINE SULFIDE DIMER P-METHOXYPHENYLTHIOPHOSPHINE SULFIDE, DIMER 2,4-bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane 2,4-disulphide 2,4-Bis(methoxyphenyl)-1,3-dithia-2,4-diphosphetane-2,4-disulfide Lawesson's Reagent [Sulfurating Reagent] 4-methoxyphenylthionophosphine sulfide dimer 2,4-Bis(4-methoxyphenyl)-2,4-dithioxo-1,3,2,4-dithiadiphosphetane 97% 4-Methoxyphenylthiophosphoric cyclic di(thioanhydride), LR, 2,4-Bis(4-methoxyphenyl)-2,4-dithioxo-1,3,2,4-dithiadiphosphetane, 2,4-Bis-(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane 2,4-disulfide Lawesson's Reagent ,99% 1,3-Bis(4-methoxyphenyl)-2,4-dithia-1,3-diphospha(V)cyclobutane-1,3-dithione 2,4-Bis(4-methoxyphenyl)-1,3-dithia-2,4-diphospha(V)cyclobutane-2,4-dithione 2,4-Bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphacyclobutane-2,4-dithione 2,4-Bis(p-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-dithione 2,4-Bisthiolato-2,4-bis(4-methoxyphenyl)-1,3-dithia-2,4-diphospha(V)cyclobutane-2,4-diylium 2,4-Di(4-methoxyphenyl) -1,3,2lambda~5~,4lambda~5~-dithiadiphosphetane-2, 4-dithione (Lawesson's Reagent) Lawesson reagent ,98% Lawesson reagent ,99% Lawesson Reagent, 2,4-Bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane 2,4-disulphide bis(4-Methoxyphenyl)-1,3,2$l^{5},4$l^{5}-dithiadiphosphetane-2,4-dithione 2,4-BIS(4-METHOXYPHENYL)-2,4-DITHIOXO-1 Lawesson reagent 97% 1,3,2,4-dithiadiphosphetane,2,4-bis(4-methoxyphenyl)-,2,4-disulfide LAWESSON'S REAGENT awesson's Reag p-Methoxyphenylthionophosphine sulfide 2,4-bis(4-methoxyphenyl)-2,4-bis(sulfanylidene)-1,3,2$l^{5},4$l^{5}-dithiadiphosphetane LAWESSON'S REAGENT For Synthesis 2,4-bis(4-methoxyphenyl)-2,4-bis(sulfanylidene)-1,3,2 Lawesson'sReagent(LR) Lawesson's Reagent ISO 9001:2015 REACH Lawesson'sReagen awesson's Reagent Lawessons Reagent,>98% Lawesson's Reagent [Sulfurating Reagent]> 2,4-BIS(4-METHOXYPHENYL)-1,3,2,4-DITHIADIPHOSPHETANE-2 2,4-bis(4-methoxyphenyl)-2,4-disulfanylene-1,3,2,4-dithiadiphosphetane 2,4-BIS(4-METHOXYPHENYL)-1,3,2,4-DITHIADIPHOSPHETANE-2,4-DISULFIDE 2,4-BIS(4-METHOXYPHENYL)-1,3-DITHIA-2,4-DIPHOSPHETANE-2,4-DISULFIDE 2,4-BIS(4-METHOXYPHENYL)-2,4-DITHIOXO-1,3,2,4-DITHIADIPHOSPHETANE Lawesson's Lawesson`s reagentsulfide dimer LR LAWESSON REAGENT 242-855-4 Lawson’s Reagent Lawesson's Reagent bis(4-methoxyphenyl)-1,3,2lambda5,4lambda5-dithiadiphosphetane-2,4-dithione 19172-47-5 1972-47-5 C14H14O2P2S4 C14H14O2P2S2 Sulfur Compounds (for Synthesis) Dithietanes Simple 4-Membered Ring Compounds Synthetic Reagents