Hexacosane

Hexacosane [630-01-3] M 366.7, m 56.4°, b 169°/0.05mm, 205°/lmm, 262°/15mm. Distd under vacuum and crystd from diethyl ether. 

Reported vapor pressures of hexacosane at various temperatures and the coefficients for the vapor pressure equations... 

FIGURE 2.1.1.1.37.1 Logarithm of vapor pressure versus reciprocal temperature for n-hexacosane. 

The diamines and their mono- and di-protonated ions can exist in various conformations, in which the nitrogen lone pairs and the protons on nitrogen are directed in (i or i+) or directed out (o or o+) from the molecular cavity. Diprotonated l,10-diazabicyclo[8.8.8]hexacosane, for example, may exist in either of the three forms in equation (79). When the out-out isomer of l,10-diazabicyclo[8.8.8]hexacosane bis hydrochloride (o+ o+) is dissolved in aqueous acidic solution, isomerisation to the in-in isomer (i+ i+) occurs so... 

Hexacosan-l-ol (Z,Z)-Octadeca-9,12-dienoic acid Isopropyl hexadecanoate Steroids... 

Der Nonacyclo-hexacosan-Kohlenwasserstoff (56) und das Aceton-Addukt (58) korrespondieren direkt zu den Produkten (46), (47) und (49) des Norbornens. 

Since non-bound or non-coordinated nucleophiles are even more reactive, crown-ethers [138] and cryptands (polyaminoethers) [139,140] have been used to chelate the alkali metal cations, notably the potassium ion of K[ F]F. This allows the [ F]fluoride anion to be less tightly paired with the cation and therefore to be more reactive, which has been coined the naked ion effect. In practice, the crown-ether (e.g. 18-crown-6) or better the polyaminoether Kryptofix-222 (4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane) is added to the aqueous K[ F]F/K2C03 solution which is then concentrated to dryness [139,140]. The complex (KP FIF-K ) can be further dried, if needed, by one or more cycles of addition of dry acetonitrile and azeotropic evaporation. 

Hexacosan-l-ol Fr 170 Hexatriaconta-2-a s-6-ds-10-a s-14-a s-18-a s-22-trans-26-trans-30-trans-34-trans-nonaen-1 -ol,3 - 7 -11 -15-19-23 -31 -3 5-nonamethy 1 ... 

The conformational interconversion of diazabicyclo [k.l.m] alkanes (Figure 6 Section 5.21.3.1.2) has been investigated by variable temperature H NMR (68JA2428). The bis-deuterochloride salt of l,10-diazabicyclo[8.8.8]hexacosane showed a slow isomerization from exo-exo to endo-endo forms during which the NH proton resonance shifted from 8.0 p.p.m. (exo-exo) to 4.6 p.p.m. (endo-endo). The equilibrium constant for the process Ke —endo-endo / exo-exo) was greater than 100. Similar measurements on differently lengthed diazabicyclo[k, l. m ]alkanes revealed that even chain Iengthed species prefer the... 

Jatropha podagrica Hooker San Hu You Tong (stem bark) Tetramethylpyrazine, steroids, n-hexacosane, beta-amirine, lupeol palmitate, beta-sitosterol, rutin, flavonoids, quercetin, apigenin, vitexin, isovitexin.57-207 208 This herb is toxic. Detoxicant, hypotensive, neuromuscular and cardiovascular actions, antibacterial, relieve swelling, pain, externally treat snakebite, infection. 

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