HCID 13978129, compound → HCID 53733830, compound
Reaction equation
[CH:1]1([CH:7]2COCC[O:8]2)[CH2:6]C[CH2:4][CH2:3][CH2:2]1.C(C1COC(C2CCC(CCCCC)CC2)OC1)C.C(C1COC(C2CCC(CCCCCCC)CC2)OC1)CC.[CH2:54]([CH:59]1[CH2:64][CH2:63][CH:62]([C@H:65]2[CH2:70][CH2:69][C@H:68]([CH:71]=[O:72])[CH2:67][CH2:66]2)[CH2:61][CH2:60]1)[CH2:55][CH2:56][CH2:57][CH3:58]>>[CH2:2]([CH:1]1[CH2:7][O:8][CH:71]([CH:68]2[CH2:67][CH2:66][CH:65]([CH:62]3[CH2:63][CH2:64][CH:59]([CH2:54][CH2:55][CH2:56][CH2:57][CH3:58])[CH2:60][CH2:61]3)[CH2:70][CH2:69]2)[O:72][CH2:6]1)[CH2:3][CH3:4]Participants
Procedure
An example of the efficacy of compounds of the invention (compound I) in broadening the nematic temperature range of admixtures including two ring cyclohexyl dioxane compounds is as follows. A binary eutectic mixture comprising 0.745 mole fraction of 5-ethyl-2-(4-pentylcyclohexyl)-1,3-dioxane (compound A) and 0.255 mole fraction of 5-propyl-2-(4-heptylcyclohexyl)-1,3 dioxane (compound B) exhibits a nematic temperature range of 12.5° C. to 26.5° C. Addition of a three ring compound of the formula ##STR12## namely, 5-ethyl-2-(4-pentylcyclohexyl) cyclohexyl)-1,3 dioxane (compound C) to provide a eutectic mixture comprising 0.610 mole fraction of compound A, 0.189 lmole fraction of compound B and 0.201 mole fraction of compound C resulted in a measured nematic temperature range of 8.6° C. to 59.7° C. while the mixture retained low viscosity and low optical birefringence, e.g., Δn=0.04.
Workup
- customa nematic temperature range of 12.5° C. to 26.5° C
- customto provide a eutectic mixture
- customresulted in a measured nematic temperature range of 8.6° C. to 59.7° C. while the mixture
Sources & evidence
- ORD record
- ord-3dd4a91a32784ead9a1a30019294bd86
- Source dataset
- uspto-grants-1982_04
- Patent number
- US04323473
Reaction notes
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