882880-02-6

Basic information

• Product Name: 4-hydroxymethyl-2,5-bis(trimethylsilylethynyl)benzyl alcohol
• Synonyms: 4-hydroxymethyl-2,5-bis(trimethylsilylethynyl)benzyl alcohol
• CAS NO: 882880-02-6
• Molecular Weight: 330.574
• Mol File: 882880-02-6.mol

Chemical Properties

• CAS DataBase Reference: 4-hydroxymethyl-2,5-bis(trimethylsilylethynyl)benzyl alcohol(CAS DataBase Reference)
• NIST Chemistry Reference: 4-hydroxymethyl-2,5-bis(trimethylsilylethynyl)benzyl alcohol(882880-02-6)
• EPA Substance Registry System: 4-hydroxymethyl-2,5-bis(trimethylsilylethynyl)benzyl alcohol(882880-02-6)

Safety Data

• Hazardous Substances Data: 882880-02-6(Hazardous Substances Data)

Upstream product

• 882880-03-7 2-((triisopropylsilyl)ethynyl)-5-((trimethylsilyl)ethynyl)terephthalaldehyde 
• 915706-87-5 2,5-diiodo-1,4-bis-(hydroxymethyl)benzene 
• 1066-54-2 trimethylsilylacetylene 
• 882880-01-5 diethyl 2,5-bis(trimethylsilylethynyl)terephthalate 
• 185051-30-3 diethyl 2,5-bis(((trifluoromethyl)sulfonyl)oxy)terephthalate 

Downstream Products

• 1186310-17-7 1,4-bis(t-butyldimethylsiloxymethyl)-2,5-bis(trimethylsilylethynyl)benzene 
• 882880-08-2 1,4-bis(4-(tert-butylthio)phenylethynyl)-2,5-bis[{4,5-bis(methoxycarbonyl)-1,3-dithiol-2-ylidene}methyl]benzene 
• 882880-06-0 1,4-bis[{4,5-bis(methoxycarbonyl)-1,3-dithiol-2-ylidene}methyl]-2,5-bis(trimethylsilylethynyl)benzene 
• 882880-07-1 1,4-diethynyl-2,5-bis[{4,5-bis(methoxycarbonyl)-1,3-dithiol-2-ylidene}methyl]benzene 
• 882880-03-7 2-((triisopropylsilyl)ethynyl)-5-((trimethylsilyl)ethynyl)terephthalaldehyde 

Relevant articles and documents

Lanthanide-Catalyst-Mediated Tandem Double Intramolecular Hydroalkoxylation/Cyclization of Dialkynyl Dialcohols: Scope and Mechanism

Lanthanide-organic complexes of the general type [Ln{N-(SiMe 3)2}3] (Ln = La, Sm, Y, Lu) serve as effective precatalysts for the rapid, exo-selective, and highly regioselective tandem double intramolecular hydroalkoxylation/cyclization of primary and secondary dialkynyl dialcohols to yield the corresponding bi-exocyclic enol ethers. Conversions are highly selective with products distinctly different from those generally produced by conventional transition metal or other catalysts, and the turnover frequencies with some substrates are too large to determine accurately. The rates of terminal alkynl alcohol hydroalkoxylation/cyclization are significantly more rapid than those of internal alkynyl alcohols, arguing that steric demands dominate the cyclization transition state. The hydroalkoxylation/cyclizations of internal dialkynyl dialcohols afford excellent E selectivity. The rate law for dialkynyl dialcohol hydroalkoxylation/ cyclization is first-order in [catalyst] and zero-order in [alkynyl alcohol], as is observed for the organolanthanide-catalyzed hydroamination/cyclization of aminoalkenes, aminoalkynes, and aminoallenes, and the intramolecular single-step hydroalkoxylation/cyclization of alkynyl alcohols. An ROH/ROD kinetic isotope effect of 0.82(0.02) is observed for the tandem double hydroalkoxylation/ cyclization. These mechanistic data implicate turnover-limiting insertion of C-C unsaturation into the Ln-O bond, involving a highly organized transition state, with subsequent, rapid Ln-C protonolysis.

Dynamic molecular tweezers composed of dibenzocyclooctatetraene units: Synthesis, properties, and thermochromism in host-guest complexes

Novel dynamic molecular tweezers (DMTs) 3a, 3b, 4a, 4b, and 5 b, composed of two tub-shaped dibenzocyclooctatetraene (DBCOT) units, were designed and synthesized. The cyclooctatetraene (COT) rings of these DMTs readily invert in solution, and the molecula

Synthesis of oligo(phenyleneethynylene)-tetrathiafulvalene cruciforms for molecular electronics

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