Detail of "19172-47-5"

CAS Number:
19172-47-5
Name:
1,3,2,4-Dithiadiphosphetane,2,4-bis(4-methoxyphenyl)-, 2,4-disulfide
Superlist Name:
Lawesson's reagent
Molecular Structure:
Formula:
C₁₄H₁₄O₂P₂S₄
Molecular Weight:
404.47
Deleted CAS:
114668-60-9, 136390-48-2, 72728-81-5, 94367-93-8
Synonyms:
Phosphonotrithioicacid, (p-methoxyphenyl)-, bimol. cyclic anhydrosulfide (8CI);2,4-Bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane2,4-disulfide;2,4-Bis(p-methoxyphenyl)-1,3,2,4-dithiadiphosphetane2,4-disulfide;2,4-Di(p-methoxyphenyl)-1,3-dithiadiphosphetane disulfide;NSC 150550;Reagents, Lawesson's;p-Anisyldithiophosphonicanhydride;
EINECS:
242-855-4
Density:
1.489 g/cm³
Melting Point:
228-230 °C(lit.)
Boiling Point:
525.779 °C at 760 mmHg
Flash Point:
271.782 °C
Solubility:
decomposes in water, soluble in part of the polar organic solvents
Appearance:
light yellow to beige powder
Hazard Symbols:
Xn, Xi, F
Risk Codes:
20/21/22-15/29-37
Safety:
8-43-36/37-22-38 Details
Transport Information:
UN 3278

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Photochemistry of the nitrogen-thiocarbonyl systems: Photochemistry of the nitrogen-thiocarbonyl systems.Some chemicals with cas registry numbers like 109-92-2 and 19172-47-5 are also used. 28. Photoreactions of thiobarbiturates. Intermolecular cycloaddition with alkenes and ring contraction reaction of trithiobarbiturate. Takechi, Haruko; Machida, Minoru (Fac. Pharmaceutical Sci., Health Sci. Univ. Hokkaido, Hokkaido 061-02, Japan). Chemical & Pharmaceutical Bulletin, 45(1), 1-7 (English) 1997 Pharmaceutical Society of Japan. CODEN: CPBTAL. ISSN: 0009-2363. DOCUMENT TYPE: Journal CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) Section cross-reference(s): 28 Upon irradn. of mono-, di-, and trithiobarbiturates in the presence of alkenes, [2 + 2] cycloaddn. occurred regioselectively to give thietanes and their desulfurized products. In the case of trithiobarbiturate, a novel type of ring contraction product, dithiohydantoin, was also obtained. .

Thiocarboxylic polymers, 4: Thiocarboxylic polymers, 4. Synthesis of poly(N,N-diethylmethacrylthioamide-co-styrene) and poly(ethyl dithiomethacrylate-co-styrene. Bonnans-Plaisance, Chantal; Levesque, Guy (Lab. Physicochim. Photochim. Org., Univ. Maine, Le Mans 72017, Fr.). Makromol. Chem., Rapid Commun., 6(3), 145-8 (French) 1985. CODEN: MCRCD4. ISSN: 0173-2803. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Radical polymn. of N,N-diethylthiomethacrylamide (I) [66756-94-3], prepd. by sulfuration of N,N-diethylmethacrylamide [5441-99-6] with Lawesson's reagent [19172-47-5], gave a 10% yield of homopolymer [96387-42-7]. The radical polymn. of a 1:8 mixt. of I and styrene gave a copolymer [86689-15-8] contg. 2.5% thioamide group. S-Alkylation of this polymer with Et3O+BF4- [368-39-8] and reaction of the unisolated immonium salt with H2S gave Et dithiomethacrylate-styrene copolymer. A similar reaction with BrCH2CO2H [79-08-3] gave carboxymethyl dithiomethacrylate-styrene copolymer. UV spectrometry showed the conversions to be quant., and no crosslinking occurred.