134745-26-9

Basic information

• Product Name: Silane, [(1-methylene-2-butenyl)oxy]tris(1-methylethyl)-, (E)-
• CAS NO: 134745-26-9
• Molecular Formula: C14H28OSi
• Molecular Weight: 240.461
• Mol File: 134745-26-9.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: Silane, [(1-methylene-2-butenyl)oxy]tris(1-methylethyl)-, (E)-(CAS DataBase Reference)
• NIST Chemistry Reference: Silane, [(1-methylene-2-butenyl)oxy]tris(1-methylethyl)-, (E)-(134745-26-9)
• EPA Substance Registry System: Silane, [(1-methylene-2-butenyl)oxy]tris(1-methylethyl)-, (E)-(134745-26-9)

Safety Data

• Hazardous Substances Data: 134745-26-9(Hazardous Substances Data)

Upstream product

• 80522-42-5 triisopropylsilyl trifluoromethanesulfonate 
• 3102-33-8 trans-3-penten-2-one 

Downstream Products

• 134745-43-0 4-Phenyl-6-((E)-propenyl)-6-triisopropylsilanyloxy-5,6-dihydro-4H-pyran-2-carboxylic acid ethyl ester 
• 134745-42-9 (2-Methyl-6-phenyl-4-triisopropylsilanyloxy-cyclohex-3-enyl)-oxo-acetic acid ethyl ester 
• 139278-45-8 (1S,4R)-2-(1,2-Dimethyl-4-triisopropylsilanyloxy-cyclohex-3-enecarbonyl)-4,7,7-trimethyl-2-aza-bicyclo[2.2.1]heptan-3-one 
• 134745-45-2 C₂₅H₃₇NO₄Si 
• 134745-47-4 Acetic acid 2-(2-methyl-4-triisopropylsilanyloxy-cyclohex-3-enyl)-2-oxo-ethyl ester 
• 134745-44-1 C₂₀H₃₅NO₄Si 

Relevant articles and documents

Asymmetric diels - Alder reactions with chiral acetylenic carbene complexes as dienophiles

A new synthetic method is developed for the asymmetric Diels-Alder reactions of acetylenic dienophiles. Acetylenic Fischer carbene complexes with chiral pyrrolidines as the heteroatom stabilizing substituent were anticipated to block three of the four possible approaches of a diene and lead to selective asymmetric cycloadditions. A series of complexes of the type (CO)5MC((C4H7N)CR7OMe)C≡CH (M=Cr, W; R=H, Me, Ph) were prepared by aminolysis of the corresponding methoxy complexes that have the terminal acetylene protected as a silane. Michael addition is completely suppressed if the alkyne is protected as a triisopropylsilyl group and after aminolylsis by 1,2-addition of a pyrrolidine the terminal alkynyl carbene complexes can be obtained predominately as E-isomers upon protodesilylation. The cycloadditions of the E-isomers (but not Z-isomers) of these complexes occur with significant asymmetric induction with 2-triisopropylsiloxy-1,3- pentadiene (66-73% de) but not with cyclopentadiene and α- triisopropylsiloxyvinyl cyclohexene. A model is presented to account for the observed stereoselectivities. (C) 2000 Published by Elsevier Science Ltd.

Reversal of the regiochemistry in the rhodium-catalyzed [4+3] cycloaddition between vinyldiazoacetates and dienes

A regio-, diastereo-, and enantioselective [4+3] cycloaddition between vinylcarbenes and dienes has been achieved using the dirhodium tetracarboxylate catalyst [Rh2(SBTPCP)4]. This methodology provides facile access to 1,4-cycloheptadienes that are regioisomers of those formed from the tandem cyclopropanation/Cope rearrangement reaction of vinylcarbenes with dienes.

Asymmetric Diels-Alder Reactions of Chiral N-Methacryloylsultams with 1,3-Dienes

R2AlCl-coordinated N-methacryloylsultam 1c undergoes efficient, endo-selective and highly diastereoface controlled -additions to cyclopentadiene, isoprene, (E)-piperylene and the 2-silyloxydienes 10 and 12.The resulting cystalline cycloadducts are smoothly reduced with LiAlH4 providing the recovered auxiliary and the corresponding enentiomerically pure alcohols.