Propanoic acid, 2,2-dimethyl

Dimethyl propanoic acid, AE74 Dimethyl propylamine, AF05... [Pg.630]

During the total synthesis of the pentacyclic sesquiterpene dilactone (+)-merrilactone A by S.J. Danishefsky et al., a two-carbon unit was introduced at C9 by a Johnson-Claisen rearrangement. This high yielding transformation was carried out in the presence of catalytic 2,2-dimethyl propanoic acid at 135 °C using mesitylene as the solvent. A mixture of diastereomeric esters were formed, which were later hydrolyzed and subjected to iodolactonization to form the second lactone ring present in merrilactone A. The natural product was synthesized in 20 steps with an overall yield of 10.7%. [Pg.227]

Diethylmethoxyborane is easily prepared by reaction of triethylborane with methanol at room temperature. Small amounts (0.1 mole %) of 2,2-dimethyl-propanoic acid are added to the reaction mixture.2 (Triethylborane reacts irreversibly with 2,2-dimethylpropanoic acid at 0° to give [(2,2-dimethylpro-panoyl)oxy]diethylborane and ethane. With methanol, 2,2-dimethylpropanoic acid and diethylmethoxyborane are formed). [Pg.191]

Koch reaction. Carbonium ions react with carbon monoxide (under pressure) to form acyl cations the overall reaction from isobutene gives 2, 2-dimethylpropionic (2, 2-dimethyl propanoic) acid, for example. [Pg.335]

The poly(HASCL) containing units other than 3HB and 3HV include different tercopolymers, such as poly(3HB-co-3HV-co-5HV) (R. eutropha) [90] and poly(3HB-co4HB) R. eutropha) [91]. Poly(3HB-co-3HV-co-5HV) and poly-(3HB-CO-4HB) are less crystalline and more biodegradable than poly(3HB-co-4HB). 3-Hydroxy-2,2-dimethyl-propanoic acid was polycondensed (Rhodocodus ruber) [92], as well as 3-pentenoic acid (Burkolderia) [93] and 4-pentanoic acid (Rhodospirilhum) [94] these acids were also copolycondensed with 3-hydroxy-butanoate, 3-hydroxy-pentanoate, and 3-hydroxy-2,2-dimethyl-propanoic acid. [Pg.64]

X-ray, 4, 160 (79AX(B)2228> lH-Pyrrole-2,4-diamine, 1-t-butyl-JV, JV -dimethyl-3-phenyl-JV -phenylsulfonyl-X-ray, 4, 160 (78BSB893) lH-Pyrrole-3-methanol, 4-acetyl-X-ray, 4, 160 (78AX(B)1248> lH-Pyrrole-3-methanol, 4-acetyl-, hydrate X-ray, 4, 160 (78AX(B)1248> lH-Pyrrole-3-propanoic acid, ester C NMR, 4, 172 (74JCS(P2)1004>... [Pg.55]

Intramolecular Friedel-Crafts acylation has been observed with bonellin dimethyl ester (20).53 The reaction proceeds in contrast to corresponding porphyrins, very smoothly with concentrated sulfuric acid because the propanoic acid side chain at the sp3 center is located above the macrocyclic ring system and therefore can better fulfill the stereoelectronic requirements for the ring-closure reaction. The ring closure is accompanied by racemization in the product 21. [Pg.631]

Benzoquinone Fivalic [Propanoic acid, 2,2-dimethyl-] 2-tert-Butyl [2,5-Cyclohexadiene-1,4-dione, 2- (1,1 -di methy lethy 1) - ] 67" 2... [Pg.70]

Propane, 2-isocyanato- [1795 48-8], 96 Propane, 1 mtro [108-03-2, 36 1,3-Propanedithiol [109-80-8],9 Propanoic acid, 2-chloro- [598-78-7], 70 Propanoic acid, 2,2-dimethyl- [75-98-9], 70 Propanoic acid, 2-iodo-3-mtro-, ethyl ester [57621-01-9], 65... [Pg.136]

Propane, 2,2-dimethyl-l-phenyl-, 55, 112 Propane, 2-isocyano-2-methyl-, 55, 96 1.3-Propanedithiol, 56, 9 Propanesulfonyl cyanide, 57, 89 Propanoic acid, 2-chloro-, 56, 70 2-Propanol, 58, 133... [Pg.190]

OiCsHm, Propanoic acid, 2,2-dimethyl-tungsten complex, 26 223 02C Hh, Methyl benzoate chromium complex, 26 32 02CuiH (, 2,3-Naphthalenediol in prepn. of cu-tetraamminedihaloruthe-nium(III) complexes, 26 66, 67... [Pg.429]

Dimethyl-4-oxo-2,3,4,5,6,7-hexahydro-lH-indole-6-carb xyKc add]-L-Lactyl-Glu-Ala-Leu-Ala-Lys-Ala-NH2 General Procedure for the Attachment of a Peptide to 2-( f6-(tert-Butoxycarbonyl)-3,6-dimethyl-4-oxo-2,3,4,5,6,7-hexahydro-lH-indol-3-yl]carbonyl oxy)propanoic Acid 1 201... [Pg.771]

D-Pantalacton reacted with p-alanine as a result 3-(2,4-dihydroxy-3,3-dimethyl-butyrylamino)-propanoic acid was produced. [Pg.2611]

Propionic anhydride (8) Propanoic acid, anhydride (9) (123-62-6) [1S(R),2S]-N-(2-Hydroxy-1-methyl-2-phenylethyl)-N, 2-dimethylbenzene-propionamide (1S,2S)-Pseudoephedrine-(R)-2-methylhydrocinnamide Benzenepropanamide, N-(2-hydroxy-1-methyl-2-phenylethyl)-N, a-dimethyl-,... [Pg.30]

Propa, Propanoic acid Buta, butanoic acid Penta, pentanoic acid Hexa, hexanoic acid Hepta, heptanoic acid Octa, octanoic acid Nona, nonanoic acid Deca, decanoic acid Pal, palmitic acid St, stearic acid Piva, trimethylacetic acid Vers, Versatic acid a-BrHexa, a-bromohexanoic acid x-BrSt, a-bromostearic acid Me2(OH)Hexa, 2,5-dimethyl-2-hydroxyhexanoic acid a,a -DAC, a,a -dialkylcarboxylic acid Naph, naphthenic acid cy-PA, cyclopentylacetic acid cy-Hexa, cyclohexanecarhoxylic acid C7-C mix, C7-C9 mixture CB, chlorobenzene cy-Hexn, cyclohexane 1,2-DCE, 1,2-dichloro-ethane (i-Pr)2CO, diisopropyl ketone i-amOAc, isoamyl acetate i-amOH, isoamyl alcohol MIBK, 4-methyl-2-pentanone NB, nitrobenzene n-Hexn, n-hexane PE, petroleum ether TCB, 1,2,4-trichlorobenzene. [Pg.154]

Pivalic acid Propanoic acid, 2,2-dimethyl- Taurine Ethanesulfonic acid, 2-amino-... [Pg.47]

Propionic acid Propanoic acid Theobromine l//-Purine-2,6-dione, 3,7-dihydro-3,7-dimethyl-... [Pg.47]

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