Heptyl hydride

Synonyms AI3-28784 BRN 1730763 Dipropylmethane EINECS 205-563-8 Gettysolve-C n Heptane Heptyl hydride NSC 62784 Skellysolve C UN 1206. 

Synonyms Dipropyl methane heptyl hydride heptane... 

SYNS DIPROPYL METHANE EPTANI (ITALL N) GETTYSOLVE-C HEPTAN (POLISH) n-HEPTANE O HEPTANEN (DUTCH) HEPTYL HYDRIDE... 

Synonyms n-Heptane Dipropyl methane Getty-solve-C Heptyl hydride Heptan (Polish) Eptani (Italian) Heptanen (Dutch) UN1206 (DOT) Chemical/Pharmaceutical/Other Class Aliphatic hydrocarbon... 

HEPTYL HYDRIDE (142-82-5) Forms explosive mixture with air (flash point 25°F/ —4°C). Violent reaction with strong oxidizers. Attacks some plastics, rubber, and coatings. May accumulate static electric charges that can ignite its vapors. 

AI3-28784 Dipropyimethane EINECS 205-563-8 Eptani Exxsol Heptane Gettysolve-C Heptan Heptane n-Heptane Heptanen Heptyl hydride HSDB 90 NSC 62784 Skellysolve C UN1206. Hydrocarbon derived ohiefly from petroleum. Used as a solvent. Liquid mp = -90.6° bp = 98.5° d = 0.6837 insoluble in H2O, soluble in CCU very soluble in EtOH freely soluble in Et20, Me2CO, CeHe, CHCI3, petroleum ether. Ashland Exxon Humphrey Phillips 66 Texaco. 

Synonyms Alkane C7 Dipropyl methane n-Heptane Heptyl hydride Clas cation Sat. aliphatic hydrocarbon Empirical CjHk Fmnula CH,(CH2)5CH,... 

Heptyl hydride. See Heptane Hetastarch. See Hydrot ethylcellulose Hexa. See Hexamethylenetetramine... 

Synonyms Altene C7 Dipropyl methane n-Heptane Heptyl hydride Classification Sat. aliphatic hjrtrocarbon Empirical C H g Formula CH3(CH2)5CH3... 

Trade Names Albrite N-Heptyl Acid Phosphate N-Heptyl acid phosphate. See Heptyl acid phosphate Heptyl carbinol. See Caprylic alcohol Heptyl hydride. See Heptane Hetastarch. See Hydroxyethylcellulose Hexacosyl glycol isostearate... 

Unsymmetrical ethers may be produced from the acid-promoted reactions of aldehydes and organosilicon hydrides when alcohols are introduced into the reaction medium (Eq. 173).327,328 An orthoester can be used in place of the alcohol in this transformation.327 335 A cyclic version of this conversion is reported.336 Treatment of a mixture of benzaldehyde and a 10 mol% excess of triethylsilane with methanol and sulfuric, trifluoroacetic, or trichloroacetic acid produces benzyl methyl ether in 85-87% yields.328 Changing the alcohol to ethanol, 1-propanol, 2-propanol, or 1-heptanol gives the corresponding unsymmetrical benzyl alkyl ethers in 45-87% yield with little or no side products.328 A notable exception is the tertiary alcohol 2-methyl-2-propanol, which requires 24 hours.328 1-Heptanal gives an 87% yield of //-lie ply I methyl ether with added methanol and a 49% yield of benzyl n-heptyl ether with added benzyl alcohol under similar conditions.328... 

Reactions of formyl complexes with alkylating agents can be more complex than the reductions in Eqs. (15-22). Some examples of simple hydride transfer exist. For instance, (CO)4Fe(CHO) (22) reduces octyl iodide to octane (75%) (27, 28) (C2H5)4N + 25 (Table I) reacts with heptyl iodide (overnight, room temperature, THF) to give heptane (71%) and (CO)4[(ArO)3P]Fe (37, 42) c/.s-(CO)5ReRe(CO)4(CHO) (19) converts octyl iodide to octane (68%) (47). 

Doom, 1969 Saunders and Stofko, 1973). The barrier for 1,4-hydride shift in 2,5-dimethyl-2-hexyl cation [12] is some 12-13 kcal mol" (Saunders and Stofko, 1973) which is even higher than for [11]. Going to 1,5-shifts in 2,6-dimethyl-2-heptyl cation [13] either the barrier is drastically decreased to... 

The 6,2(6, l)-hydride shift rarely occurring in the chemistry of acyclic compounds seems to be common in that of carbocations having a bicycIo[2.2.1]heptyl skeleton. 

The most often used method is to start with a functional group in a defined position that is easily lost upon ionization. Halogen atoms are mostly used for the production of heptyl ions, the iodides are particularly useful since the intensity of the molecular ion is weak, the heptyl parent ion is relatively abundant and the ions with iodine or fragments thereof contribute to less than 1% of the total ion current They can be considered a clean source of heptyl (or any alkyl) ions. Another possibility are ion/molecule reactions occurring in chemical ionization, either by adding a proton to an olefin, by hydride (or another anion) abstraction with, e.g., Et, or by proton transfer, e.g., by to an... 

Another reaction sequence (Fig. 22) will proceed in a similar fashion. It starts with a y-heptyl cation and leads to the formation of 3-MH and 2,4-DMP cations through the isomerization, with the energy barriers at 8.83 and 12.77 kcal/mol. These branched cations will quickly abstract a hydride to form stable alkanes. The similar magnitude of the energy barriers between the formation of the mono- and di-methyl branched isoheptanes may explain the observed ratios among the four heptane isomers. 

The 2,3-dimethylbicyclo[2.2.2]octyl cation [152] and the methyl-substituted 2-heptyl cations [95] and [97] are suitable models for different orientations of a p—C—D bond with respect to the vacant p-orbital at the -carbon. The cations [152], [95] and [97] undergo fast 1,2- and 1,5-hydride shifts (105)-(107), which give averaged nmr-signals and establish an isotope exchange situation for p—H p—D. Both prerequisites for evaluation of... 

Free radical additions to alkenylboronic esters provided the first access to (a-haloalkyl)boronic esters [8]. Intramolecular cyclizations involving radical additions to alkenylboronic esters have been reported and, also, a (l-iodo-S-hexenyl)boronic ester cyclizes to the cyclopentyl derivative under radical conditions [83]. Reaction of pina-col (l-iodopentyl)boronate with tributyltin hydride and butyl vinyl ether yielded the addition product pinacol (l-butoxy-3-heptyl)boronate (71%), but addition of the bory-lalkyl radical to methyl acrylate was inefficient and yielded mainly the simple reduction product, pinacol pentylboronate [84]. 

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