Reaction Of Secondary Phosphines Research Articles

ChemInform Abstract: Selective Synthesis of Hydrazinium Diselenophosphinates from Secondary Phosphines, Elementary Selenium, and Hydrazine.

A three-component reaction of secondary phosphines, elementary selenium, and hydra zine hydrate (the molar ratio 1: 2: 1.1) selectively proceeds under mild conditions (EtOH, 70-75°C, 0.5 h) to form earlier unknown hydrazinium diselenophosphinates (81-95%).

ChemInform Abstract: Three‐Component Reaction of Secondary Phosphines with Elemental Selenium and Amines.

ChemInform Abstract: Three‐Component Reaction of Secondary Phosphines with Elemental Selenium and Amines.

Reaction of secondary phosphines with elemental sulfur and hydrazine: atom-economic synthesis of dithiophosphinates

Reaction of secondary phosphines with elemental sulfur and hydrazine: atom-economic synthesis of dithiophosphinates

ChemInform Abstract: Lewis Acid-Promoted Reaction of Secondary Phosphines with Carbonyl Compounds: Remarkable Effect of Niobium(V) Chloride in Promoting an Intramolecular Oxidation-Reduction Process.

ChemInform Abstract: Lewis Acid-Promoted Reaction of Secondary Phosphines with Carbonyl Compounds: Remarkable Effect of Niobium(V) Chloride in Promoting an Intramolecular Oxidation-Reduction Process.

Hydrophosphination of Vinyl Sulfides and Vinyl Selenides: First Examples.

AbstractFor Abstract see ChemInform Abstract in Full Text.

Hydrophosphination of Vinyl Sulfides and Vinyl Selenides: First Examples

The first examples of the hydrophosphination of alkyl vinyl sulfides and selenides are described. The reaction of secondary phosphines (R 1 ) 2 PH 1-3 with vinyl chalcogenides CH 2 =CHXR 2 4-9 proceeds readily under radical initiation to give in anti-Markovnikov mode regiospecifically the corresponding organylchalcogenophosphines (R 1 ) 2 PCH 2 CH 2 XR 2 10a-h in high yields.

ChemInform Abstract: Reaction of Secondary Phosphines and Phosphine Oxides with Divinyl Sulfone.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

ChemInform Abstract: The Reaction of Secondary Phosphines and Di‐1‐adamantylphosphine Oxide with Trifluoroacetic Anhydride and Hexafluoroacetone.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

The reaction of secondary phosphines and di-1-adamantylphosphine oxide with trifluoroacetic anhydride and hexafluoroacetone

While the secondary phosphines (1-Ad) 2PH (1) (l-Ad = adamantyl) and Trt(Ph)PH (2) (Trt = triphenylmethyl) reacted readily with trifluoroacetic anhydride (TFAA) to give the trifluoroacetylphosphines 7 and 8. (1-Ad) 2P(:O)H (6) could not be converted into the corresponding trifluoroacetylphosphine oxide 10 by treatment with TFAA. Compound 10 was observed by 19F and 31P NMR spectroscopy in the reaction of (1-Ad) 2PC(:O)CF 3 (7) with (H 2N) 2C(:O) · H 2O 2. Two pathways were observed for the reaction of 1 with excess hexa-fluoroacetone (HFA), starting from the primary HFA adduct (1-Ad) 2PC(CF 3) 2OH (13). Oxidation of 13 led to the tertiary phosphine oxide 14 which was also available from (1-Ad) 2P(:O)H (6) and HFA. Isomerization of 13 gave (1-Ad) 2POCH(CF 3) 2 (15) whose oxidation with excess HFA furnished the phosphorane 16. Hydrolysis of 16 led to the phosphinic ester 17. As is known for Ph 2PH (3), Ph(C 6F 5)PH (4) reacted with HFA to give the α-hydroxyphosphine 19. No reaction was observed when Trt(Ph)PH (2) and (C 6F 5) 2PH (5) were treated with HFA.

Phosphonium ions rather than phosphenium ions from the reaction of secondary phosphines with trityl cation

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhosphonium ions rather than phosphenium ions from the reaction of secondary phosphines with trityl cationJoseph B. Lambert and Jeung Ho SoCite this: J. Org. Chem. 1991, 56, 20, 5960–5962Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://doi.org/10.1021/jo00020a050RIGHTS & PERMISSIONSArticle Views746Altmetric-Citations26LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (460 KB) Get e-Alerts Get e-Alerts

ChemInform Abstract: Reaction of Secondary Phosphines with Trialkyl Orthoacetates.

AbstractThe trialkyl orthoacetates (I) are coupled with the dialkylphosphines (II) to give the ethylidenebisphosphines (IV) via the monophosphines (III).

ChemInform Abstract: Reactions of Secondary Phosphines with a Phosphorus‐Phosphorus Bond and Related Reactions.

AbstractThe reaction of a sec. alkyl‐ or arylphosphine or ‐arsine with the cyclic polyphosphine (I) or (CF3P)5 produces chiral dipnicogens of the type R2E‐P(CF3)H (E: P or As).

Reactions of secondary phosphines with a phosphorus-phosphorus bond and related reactions

Reactions of secondary phosphines with a phosphorus-phosphorus bond and related reactions

Synthesis of dinuclear phosphido or arsenido bridged complexes of molydenum via reaction of secondary phosphines or arsines with [Mo(η 5-C 5H 5)(CO) 3] 2: X-ray structures of {[Mo(η 5-C 5H 5)(CO) 2] 2(μ-H)(μ-ER 2)} (E = P, R = t-Bu; or E = As, R = Me)

Reaction of [Mo(η 5-C 5H 5)(CO) 3] 2 with t-Bu 2PH or Me 2AsH yields {[Mo(η 5-C 5H 5(CO) 2] 2(μ-H)(μ-ER 2)}, where E = P, R = t-Bu ( 1) (45%); or E = As, R = Me ( 2) (35%). The X-ray crystal structures of 1 and 2 have been determined. Each complex contains a central planar Mo 2(E)(H) core and the co-ordination geometry about each Mo is best described as a “four-legged stool” in which adjacent H and P (or As) atoms are shared. The positions of the bridging hydrogen atoms are symmetrical to within experimental error.

ChemInform Abstract: REACTION OF SECONDARY PHOSPHINES WITH OLEFIN OXIDES

AbstractDiphenylphosphin (I) reagiert bei 170 ‐ 220°C mit den Ethylenoxiden (II) zu den Phosphoranen (III), die sofort in die Phosphinoxide (IV) übergehen.

Organoarsen-verbindungen: XXXIII. Synthese und reaktionsverhalten der α-aminomethylphosphine und -arsine

α-Dialkylaminomethylphosphines and the corresponding arsines have been obtained by the following methods: (1) by direct Mannich reaction, (2) by reaction of secondary phosphines and arsines with bis(dimethylamino)methane, and (3) by reaction of methyleneammonium halides with secondary phosphines and arsines, silylphosphines and silylarsines, and alkali phosphides and alkali arsides, respectively. The compounds obtained show a similar reactivity as N, N-acetals. The aminomethyl group is transferred to H-acidic agents, the reaction with halides yields methylene ammonium halides and halophosphines or haloarsines, respectively. Reactivity towards methyl iodide is influenced by substituents at the phosphorus or arsenic atoms. In the case of the phosphorus compounds acetylphosphines are obtained by reaction with acetyl chloride, while the arsenic compounds add acetyl chloride to give ammonium salts.

Reaction of secondary phosphines with olefin oxides

1. The reaction of diphenylphosphine with symmetrical olefin oxides proceeds with the formation ofβ-hydroxyalkyldiphenylphosphine oxides. 2. The reaction of secondary phosphines with propylene oxide leads toα-hydroxyisopropylphosphine oxides.

Reaction of secondary phosphines with trichloroacetonitrile

Reaction of secondary phosphines with trichloroacetonitrile

Reaction of secondary phosphines with N-arenesulfonylbenzoquinonimines

Reaction of secondary phosphines with N-arenesulfonylbenzoquinonimines

Reaction of secondary phosphines with sulfonyl chlorides

The reaction of secondary phosphines with sulfonyl chlorides gives sulfenylphosphine oxides (esters of dialkylthiolphosphinic acids), and not sulfonylphosphines.