Reaction of 1-(Diphenylmethylene)-2(1h)-and 4-(Diphenylmethylene)-1(4h)-Naphthalenones With Thiol Phosphoric Acids, Lawesson Reagent and Phosphorus Pentasulphide

El-Kateb, A. A.; Hennawy, I. T.; Shabana, R.; Abdel-Malek, Hoda A.

doi:10.1080/10426509108029422

Cited by 11 publications

(4 citation statements)

References 9 publications

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“…Treatment of the naphthalenone 48 with LR in refluxing toluene gave the dimeric adduct 50 , the mechanism of which possibly went thought a thione intermediate 49 (Scheme ) …”

Section: 1 Ketonesmentioning

confidence: 99%

Use of Lawesson's Reagent in Organic Syntheses

2007

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His Ph.D. research involves the synthesis of dithienothiophene (DTT) and ethenedithiothiophene (EDTT) type compounds and their electrochemical polymerizations. His other research area includes controlled release of anticancer drugs in biodegradable polymers. Scheme 2. Thionation Mechanism of 3 and 4 Scheme 3. Formation of the Side Product 8 Scheme 4. Synthesis of 1,3,2-Dithiaphosphetane 2-Sulfides

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“…Treatment of the naphthalenone 48 with LR in refluxing toluene gave the dimeric adduct 50 , the mechanism of which possibly went thought a thione intermediate 49 (Scheme ) …”

Section: 1 Ketonesmentioning

confidence: 99%

Use of Lawesson's Reagent in Organic Syntheses

2007

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“…Lawesson's reagent is widely used for transformation of a carbonyl functional group into a thiocarbonyl, see: Ozturk et al (2007). Lawesson's reagent reacts with 1,2-naphthoquinone-1-methide precursors to give 1H-naphtho[1,2-e]-[1,3,2]oxathiaphosphinine 2-sulfide derivatives, which are of interest as herbicides, see: El-Kateb & El-Rahman (2006); El-Kateb et al (1991); Maigali et al (2009). For conformational calculations, see: Cremer & Pople (1975); Zefirov et al (1990); Zotov et al (1997).…”

Section: Related Literaturementioning

confidence: 99%

“…Oxford Diffraction Xcalibur Atlas Gemini ultra diffractometer Absorption correction: analytical [CrysAlis PRO (Oxford Diffraction, 2010); based on expressions derived by Clark & Reid (1995)] T min = 0.499, T max = 0.816 27233 measured reflections 4926 independent reflections 4175 reflections with I > 2(I) R int = 0.051 It was shown that Lawesson's reagent reacts with 1,2-naphthoquinone-1-methide precursors to give 1H-naphtho [1,2-e] [1,3,2]oxathiaphosphinine 2-sulfide derivatives which are interesting as herbicides (El-Kateb & El-Rahman, 2006;El-Kateb et al, 1991;Maigali et al, 2009). However, preparation of 4H-1,3,2-benzoxathiaphosphinine 2-sulfides from salicylic alcohols was not described in literature.…”

Section: Data Collectionmentioning

confidence: 99%

2-(4-Methoxyphenyl)-4H-1,3,2-benzoxathiaphosphinine 2-sulfide

et al. 2011

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The asymmetric unit of the title compound, C14H13O2PS2, contains two crystallographically independent molecules, which differ in the conformation of the 1,3,2-benzoxathiaphosphinine moieties (screw boat in the first molecule and envelope in the second molecule). In the crystal, neither classical nor non-classical hydrogen bonds are found. Weak interactions (about 2.9–3.0 Å) between the lone pair of the terminal S atoms with H atoms occur. This compound was further characterized by 1H NMR and IR spectroscopy.

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“…Keywords: Lawesson's reagent; Triethylphosphite; Phosphonates. Extending our work on the reaction of 2,4-bis-(4-methoxy-phenyl)-1,3,2,4dithiadiphosphatane-2,4-disulphide (Lawesson's reagent) 1 with different types of substrates [25][26][27][28][29], we have now studied the reaction of reagent 1 with triethyl phosphite (2).…”

Section: Introductionmentioning

confidence: 99%