2- -l-isopropyloxy

Cyclopropan 2-Isopropyloxy-l-methyl-1 -trimethylsilyloxy- E19b, 1633 (Carben + En)... [Pg.828]

Bis-[ethylthio -methoxy-methan Bis-[ethylthio]-ethoxy-methan Methoxy-methylthio-phenylthio-methan 2-Methoxy-l, 3-dithiolan 2-Methoxy-1,3-dithian 2-Isopropyloxy-l, 3-dithian... [Pg.147]

Racemic l-methyl-2-butenylboronates (E)- and (Z)-3 may be prepared selectively via reactions of the l-methyl-2-butenyl Grignard reagent with the appropriate borate ester. Use of triisopropyl borate provides a 96 4 mixture of (E)-3l(Z)-3 on a 0.36 mol scale15. Use of a bulkier borylating agent, such as 2-isopropyloxy-4,4,5,5-tetramethyl-l,3,2-dioxaborolane, reverses the selectivity, enabling a 91 9 mixture of (Z)-3/( )-3 to be obtained on a 0.5 mol scale. The diastereomeric purity of this mixture may be enhanced to 95 5 by treatment with 0.15 equivalents of benzaldehyde, since ( )-l-mcthyl-2-butenylboronatc ( )-3 is more reactive than (Z)-3. Repetition of this process provides (Z)-3 that is 98% isomerically pure. [Pg.317]

Sturmer via the reaction of the chiral borate ester (45, 5S)-4,5-dicyclohexyl-2-isopropyloxy-1,3,2-dioxaborolane, and racemic Grignard reagent (l-methyl-2-butenyl)magnesium chloride16. A 97 3 mixture of (S)-4 and its tf-diastereomer was obtained in 89% yield. [Pg.318]

Ethane 2-tcrt.-Butyloxy-l-fluoro-l-phenyl-EI0a,282(F,n + R —OH) Propane 1-Fluoro-2-isopropyloxy-2-phenyl- ElOa, 442 (H -> F)... [Pg.694]

Dioxo-5-fluoro-6-isopropyloxy-l (/l-D-ribol uranosyl)- ElOa, 301 (En -> F -C-C-OR)... [Pg.804]

Isopropyloxy-3-methyl-2,3-dihydro-l, 3,2-benzothiaza-phosphol-2-sulfids l 73% Schmp 68°... [Pg.757]

Ethan- -S,S-dibutylester E2, 408 Ethan- -S.S-diethylester E2, 408 Ethan- -S-[ l-(2,2-dimethyl-hydra7inocarbonyl)-ethylesterj-O-ethylester E2, 452 Ethan- -S-(ethoxycarbonyl-isopropyloxy-methyl-estem)-0-ethy[ester E2, 452 Ethan- -0-[(ethoxy-methylthio-methylen)-amin-ester)-S-propargylester E2, 457 Ethan- -O-ethylester E2, 452, 453, 455 Ethan- -O-ethylester-S-(2-ethylthio-ethylester) XII/1, 591 E2, 420, 449 Ethan- -S-ethvlester-0-(2-methoxycarbonyl-l-methyl-vinyiester) E2, 456 Ethan- -0-ethylester-S-(4-methyl-3-methylthio-5-oxo-4,5-dihydro-1,2,4-triazolomethylester)... [Pg.990]

Alky 1-3,4-dioxo-1 -isopropyloxy-E15/2, 1422 (Ether-Spalt.) 2-Amino-l-aryl-3,4-dioxo- E15/2,... [Pg.26]

Diazo-l-isopropyloxy- E14b, 992 (aus N-NO —amid) 2-Diazo-l-propyloxy- E14b, 992 (aus N-NO —amid)... [Pg.225]

Ethoxy- -l-ethylester-4-methyl-ester E15/1, 142 (R-COOR + Alkyliden-phosphoran) Isopropyloxy- -dimethylester Vl/ld, 16 5 f. [Pg.653]

Isopropyloxy-l-phenyl- E15/1, 153 (R-COOR + R —CHBr2) Spiro[5.6 dodeca-7,10-dien 1-Oxo-E17c, 2598 (2-Iodmethylen —1-oxo —cyclohexan + 2-Ethenyl — 1 -Cu — cyclopropan)... [Pg.1036]

Propen 1-Isopropyloxy-l-triethyl-silyloxy- E15/2, 1747 (R2CH-COOR + R3SiH)... [Pg.1084]

H-Chromen 5,7-(bzw. 6,7)-Dimeth-oxy-2,2-dimethyl- VI/4, 226 Cyclobuten 3,4-Dioxo-2-(l -hexinyl)-1-isopropyloxy- E15/2. 1421 (Ether-Spalt.) E17f, 804 [1,2-(OR)2 - 4-OH - 4-inyl -3-oxy-cyclobutan/HCl] Cydohexan trunj-2-Benzoyloxy-l-hydroxy- VI/la,l, 367, 379 Cydopentan... [Pg.1156]

Cyclohexen ( + )-l-Acetoxy-2,6-dimethyl-6-ethoxycarbonyl-E15/1, 76 (Keton + R-COOH) Cyclopentan 2-(3-Ethoxy-allyl)-2-ethoxycarbonyl-l-oxo- E15/1. 295 (Claisen-Umlager.) Cyclopropan 2,3-Diethoxycarbonyl-l-(2-methyl-l-propenyl)- E17a, 237 (subst. Cyclopropen + ROOC en-COOR) E18, 891 (Cyclopropen 4- En) 5,8-Dioxa-spiro 3.4 oct-l-en 2-Butyl-(or tert.-ButyI)-1 -isopropyloxy-3-oxo- E17f, 805 [l,2-(OR)j —4 OSiRj — 4-R — 3-oxo —cyclobuten + l,2-(OSiR3)2 — ethan] Ethan 1,1-Diethoxy-2-(4-methoxy-phenoxy)- E6b/1, 94 f, [OH -> 0-CH2-CH(0R)2]... [Pg.1182]

The rearrangement of l-isopropyloxy-2-methyl-3-methylenecyclopropane (Table 1, R = R = R" = R = H R = Me R = 0-i-Pr) proceeded smoothly below 100°C to give (Z)- and ( )- -ethylidene-2-isopropyloxycyclopropane, as expected.Isomerization of the analogous l-isopropyloxy-l-methyl-2-methylenecyclopropane (12), however, required temperatures in the order of 160"C and afforded (l-isopropyloxyethenyl)cyclopropane (13) as a single product in 95 /o yield. [Pg.2301]

Methoxycarbonyl-2-methyl-l -phenyl- 2772. 2831 C yclopropcnone Isopropyloxy-phenyl- 2991 Furane... [Pg.3282]

Komplizierter durch Reduktionsvorgange sind die Umsetzungen von ( )-3-Nitro-3-methyl-2-phenyl-oxiran. In Isopropanol (Quecksilber-Hochdruck-Lampc Pyrex-Filter Stickstoff Raumtemp.) bilden sich l-Isopropyloxy-2-oxo-1 -phenyl-propan (31% d.Th.), 1-IIydroxyimino-2-oxo-l-phenyl-propan (41% d.Th.) und l-Hydroxy-2-hydroxyimino-l-phenyl-propan (11% d.Th.)7 ... [Pg.672]

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