214707-56-9

Upstream product

• 762-42-5 dimethyl acetylenedicarboxylate 
• 224293-80-5 3,5-dimesityl-1,2,4-oxadiphosphole 
• 717-74-8 1,3,5-triisopropyl benzene 
• 38580-86-8 2,4,6-triisopropylbenzyl chloride 
• 938-18-1 mesitylene-2-carboxylic acid chloride 
• 224293-78-1 [1-(2,4,6-Trimethyl-phenyl)-1-trimethylsilanyloxy-meth-(Z)-ylidene]-trimethylsilanyl-phosphane 

Downstream Products

• 13463-40-6 iron pentacarbonyl 
• 808142-07-6 (η(4)-C2P2-(2,4,6-trimethylphenyl)2)Fe(CO)3 
• 808142-08-7 (η(4)-C2P2-(2,4,6-trimethylphenyl)2)Ru(CO)3 
• 808142-09-8 [Ru(CO)3(η(4):η(1)-C2P2-(2,4,6-trimethylphenyl)2)(Ru(CO)3(η(4)-P2C2(2,4,6-trimethylphenyl))] 
• 293731-94-9 W(CO)2[[(CH₃)3C₆H₂C]2P₂][[(CH₃)3C₆H₂CP]W(CO)5] 
• 293325-47-0 W(CO)4[(CH₃)3C₆H₂C]2P₂ 
• 266347-63-1 [((CH₃)2C₆H₃O)2W((CH₃)3C₆H₂C)2P((CH₃)2C₆H₃O)] 
• 266347-64-2 [((CH₃)2C₆H₃O)2WPP((CH₃)2C₆H₃O)C((CH₃)3C₆H₂)] 

Relevant academic research and scientific papers

Photochemical C(sp)-C(sp2) Bond Activation in Phosphaalkynes: A New Route to Reactive Terminal Cyaphido Complexes LnM-CP

The photochemical activation of the C(sp)-C(sp2) bond in Pt(0)-ν2-aryl-phosphaalkyne complexes leads selectively to coordination compounds of the type LnPt(aryl)(CP). The oxidative addition reaction is a novel, clean, and atom-economic route for the synthesis of reactive terminal Pt(II)-cyaphido complexes, which can undergo [3 + 2] cycloaddition reactions with organic azides, yielding the corresponding Pt(II)-triazaphospholato complexes. The C-C bond cleavage reaction is thermodynamically uphill. Upon heating, the reverse and quantitative reductive elimination toward the Pt(0)-phosphaalkyne-π-complex is observed.

Organophosphorus compounds, 138: 3,5-dimesityl-1,2,4-oxadiphosphole - Synthesis and reactivity of a novel heterocycle

The first synthesis of a 1,2,4-oxadiphosphole 6 has been achieved by vacuum thermolysis of mesitylphosphaalkene 5. The novel heterocycle 6 exhibits an enormous potential for cycloaddition reactions, which predominantly proceed selectively at low temperatures. Compound 6 undergoes addition with two equivalents of phosphaalkynes 10 by a [4+2] cycloaddition/homo Diels-Alder reaction sequence to form novel oxatetraphosphadeltacyclenes 12 and 13. Tetrachloro-o-benzoquinone (14) undergoes a selective [4+1] cycloaddition with 12 and 13 leading to the spirocyclic products 15 and 16 containing λ5-phosphorus atoms. Treatment of the oxadiphosphole 6 with dimethyl acetylenedicarboxylate (17) provides the first access to a 1,2-oxaphosphole 18, which is formed after an initial [4+2] cycloaddition followed by a retro Diels-Alder reaction. An unexpected reaction of 6 is observed with tri-tert-butylazete (20) furnishing a new polycyclic system (→ 21).

Organophosphorus compounds; 129. Mesitylphosphaacetylene: Synthesis and reactivity studies of a new phosphaalkyne

Mesitylphosphaacetylene (1b) has been synthesized by AlCl3 initiated elimination of bis(trimethylsilyl) ether from the phosphaalkene 2b. This new phosphaalkyne undergoes [3+2] cycloaddition reactions with diazo compounds (→ 6a,b), azides (→ 8a-c), and nitrile oxides (→ 10a,b) to yield five-membered heterocyclic products. The mesoionic reaction partners 11 and 13 react with 1b under elimination of CO2 and COS, respectively, to furnish the 1,3-aza- and 1,3-thiaphospholes 12 and 14. Reaction of 1b with buta-1,3-diene leads to the diphosphatricyclooctene 18; it has been shown that the 1-phosphacyclohexa-1,4-diene 15 (characterized by an X-ray structure analysis of its W(CO)5 complex 17) is an intermediate in the multistep reaction. Moreover, 1b has been characterized by Diels-Alder reactions with the cyclobutadiene 19 and the azacyclobutadiene 21 to afford the Dewar hetarenes 20 and 22.