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Bis- 2,2-dimethyl-propyl

Durch Metallierung mit 1-Methyl-propyl-lithium und Umsatz mit Tetrachlormethan laBt sich Bis-[2,2-dimethyl-propyl)-tert.-butyl-phosphanoxid zu tert.-Butyl-(l-chlor-2,2-di-methyl-propyl)-(2,2-dimethyl-propyl)-phosphanoxid umsetzen, das mit Lithiumdiethyl-amidzu l,2,3-Tri-tert.-butyl-phosphiran-l-oxid (52%, Zers.-p. 119—120°) cyclisiert409 ... [Pg.65]

Bis-[l,3-dimethyl-butyloxy]- XII/2, 291 Bis-[dimethyl-ethyl-silyloxy]- El, 341 Bis-[3,3-dimethyl-2-oxo-butyl]-phenyl- E2, 69 Bis-[dimethyl-phenyl-silyloxy]- El. 341 Bis-[2,2-dimethyl-propyl]-tert,-butyl- E2, 65 Bis-[diphenylmethoxy]-... [Pg.1009]

Bis-[2,2-dimethyl-propyl]- E12b, 257 (R-CHO + Al2Te3) Bis-[2-methyl-butyl]- E12b, 265... [Pg.829]

In an examination of the stereochemical course of addition of phosphorodithioic acids to 1,2-unsaturated pento- and hexopyranoses, S-deuterated 0,0-dimethyl- and 0,0-bis(2,2-dimethyl-propyl) phosphorodithioates were prepared and reacted with D-glucal. These reactions were found to be fully stereoselective at both reaction centers C-l and C-2 and afforded S-D-ara-binopyranosyl phosphorodithioates 8 and 9 in quantitative yield deuterated at C-2 of the pyranosyl ring14. s... [Pg.531]

Die Reaktion wird in zwei Stufen durchgefiihrt. Als Agenzien fur die Hydroborierung eig-nen sich Dimethylsulfan-Boran6 Oder dessen Umsetzungsprodukt mit 2-Methyl-2-buten, das Bis-[l,2-dimethyl-propyl]-boran 7 8. [Pg.342]

Tab. 68 Aldehyde aus 1-Alkenen durch Hydroborierung mit Bis-[ 1,2-dimethyl-propyl -boran und anschlieBende Oxidation5 (Pyridinium-Chlorochromat/Dichlormeihan)... Tab. 68 Aldehyde aus 1-Alkenen durch Hydroborierung mit Bis-[ 1,2-dimethyl-propyl -boran und anschlieBende Oxidation5 (Pyridinium-Chlorochromat/Dichlormeihan)...
Zur Herstellung von Bis-[l,2-dimethyl-propyl]-boran aus Natriumtetrahvdroborat in Diglyme s. [Pg.343]

Die zu unerwunschten Nebenprodukten fiihrende Dihydroborierung kann mit Bis-[1,2-dimethyl-propyl]-boran ( Disiamylboran ) praktisch vollstandig vermieden werden173. [Pg.416]

Die Reduktion mit Bis-[l,2-dimethyl-propyl]-boran verliiuft aufgrund der abgestuften Reaktivitat langsamer als mit Boran und 1,1,2-Trimethyl-propyl-boran ab, dafiir kann aber selektiv die Aldehyd-Stufe abgefangen werden114,115. 4-Butanolid wird so in guter Ausbeute zum 4-Hydroxy-butanal reduziert ... [Pg.439]

Die N,N-Dimethyl-amide von Benzoesaure und 2-Butensaure konnen mit Bis-[l,2-dimethyl-propyl]-20a bzw. 1,1,2-Trimethyl-propyl-boran209 selektiv zu den Aldehyden reduziert werden. Diese Methode scheint nur in Sonderfallen Anwendung finden zu konnen. [Pg.457]

Benzenesulfinic acid, 4-methyl-2,2-dimethyl-propyl ester[13146-08-2], 58, 147 Benzenesulfinic acid, 4-methyl-, potassium salt [19294-29-2],57,8 Benzenesulfinic acid, 4-methyl-, sodium salt [824-79-3],57, 103 Benzenesulfonamide, 4-methyl-Ar,A-bis[ 2-[ [(4-methylphenyl] sulfonyl] amino] -ethyl] -[56187-04-3], 58, 87, 97 Benzenesulfonamide, 4-methyl-A, jV-bis-[ [ [ (4-methylphenyl)sulfonyl] amino] -ethyl] -, disodium salt [52601-80-6],... [Pg.100]

Bis-[3-diathylamino-2,2-dimethyl-propyl]-amin4 Eine Losung von 5,4 g ( 19 mMol) 3-Diathylamino-2,2-dimethyl-propanal-3-diathylamino-2,2-dimethyl-propylimin in 100 ml Athanol wird liber 0,1 g Platin(IV)-oxid bei 2072 bar hydriert. Nach Aufnahme der ber. Menge Wasserstoff ( 30 Min.) wird filtriert, eingedampft und fraktioniert Ausbeute 2,9 g (53°/o d.Th.) Kp 5.2,0 130—135° n = 1,4502. [Pg.226]

N,N -bis(l,4-dimethylpentyl)-p-phenylene diamine N,N -bis(l,4-dimetilpentil)-p-fenilendiamina bis(l,2-dimethyl-propyl)borane bis(l,2-dimetil-propil)borano bis(2-ethylhexyl) phthalate flalato de bis(2-etilhexilo) bis(2-ethylhexyl) sebacate sebacato de bis(2-etilhexilo) N,N-bis(l-ethyl-3-methylpentyl)-p-phenylene diamine N,N-bis(l-etil-3-metilpentil)-p-fenilendiamina... [Pg.35]

Dimethylpropylcyanobetene can be prepared in an analogous fashion starting from the commercially available 2,5-bis(l,l-dimethyl-propyl)-l,4-benzenediol. This ketene seems to be very similar in stability and reactivity to its [Pg.38]

Bis- 3-(bzw.4)-[2,2-dimethyl-2-(2-hydroxy-propyl)-1 -dehydro-hydrazinocarbonyl]-phenyl - 687 Bis-[2-methy]-phenyl]- 538 -bis-phosphonsaure-diester 523 Bis-[trifluormethy]]- 538 tert.-Butyl-( 1-hydroperoxy-cyclopentyl)- 571 tert.-Butyl-( 1 -hydroxy-cyclopentyl)- 571 (4-Chlor-phenyl)-(2-nitro-phenyl)- 693 (4-Chlor-phenylthio)-(4-nitro-phenyl)- 700 [Cyclohexen-(l)-yl]-phenyl- 368 Diaryl- 550, 552, 558, 567 Diphenyl-... [Pg.899]

Bis-[>/ -cyclopcntadienyl)-chloro-[2,2-dimethyl-3-( 1 -melhyl-allyl)-cyclo-propyl-chloro- 1285 Bis-[n -cyclopeniadieiiyl]-chloro-[3,3-dimethyl-2-(2-methyl-allyl)-cyclo-propyl]- 1285... [Pg.3357]

Formation of these BjHg dimer derivatives is possible RHBHjBHj, R2BH2BH2, RHBH2BHR, R2BH2BHR and R2BH2BR2. The dimer-monomer equilibria accounting for disproportionation are shifted to the dimer side, both in free compounds and in ether " . Only hindered alkylboranes, e.g., bis(2,3-dimethyl-2-butyl)borane (dithexylborane) or bis[l-(trimethylsilyl)-l-propyl]borane , are monomers. [Pg.137]

Unter Decarboxylierung fiihrt die Umsetzung von 5,7-Dimethyl-4-oxo-2-(2-oxo-propyl)-4,7-di-hydro- mit Methyl-hydrazin zu N-verkniipften Bis-[lH-pyr-azol-5-yl]-aminen1219. [Pg.557]

Synonyms Siloxanes and silicones, dimethyl, 3-hydroxypropyl methyl, ethers with polyethylene glycol mono [3-[bis (2-carboxyethyl) amino] propyl) ether... [Pg.1380]


See other pages where Bis- 2,2-dimethyl-propyl is mentioned: [Pg.3399]    [Pg.3465]    [Pg.138]    [Pg.3399]    [Pg.3465]    [Pg.138]    [Pg.890]    [Pg.679]    [Pg.829]    [Pg.344]    [Pg.344]    [Pg.416]    [Pg.439]    [Pg.440]    [Pg.141]    [Pg.1018]    [Pg.831]    [Pg.942]    [Pg.530]    [Pg.589]    [Pg.3352]    [Pg.576]    [Pg.344]    [Pg.665]    [Pg.484]    [Pg.3948]    [Pg.378]    [Pg.2365]    [Pg.350]   
See also in sourсe #XX -- [ Pg.1009 ]




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Bis- -dimethyl

Dimethyl-propyl

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