Reaction SMILES: [CH2:1]([O:19][C:20]1[CH:21]=[C:22]([CH:25]=[C:26]([O:47][CH2:48][CH2:49][CH2:50][CH2:51][CH2:52][CH2:53][CH2:54][CH2:55][CH2:56][CH2:57][CH2:58][CH2:59][CH2:60][CH2:61][CH2:62][CH2:63][CH2:64][CH3:65])[C:27]=1[O:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43][CH2:44][CH2:45][CH3:46])[CH2:23]Cl)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18].[OH:66][C:67]1[CH:74]=[C:73]([O:75][CH3:76])[CH:72]=[CH:71][C:68]=1[CH:69]=[O:70].C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.C(Cl)(Cl)Cl>[CH3:76][O:75][C:73]1[CH:72]=[CH:71][C:68]([CH:69]=[O:70])=[C:67]([O:66][CH2:23][C:22]2[CH:21]=[C:20]([O:19][CH2:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18])[C:27]([O:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43][CH2:44][CH2:45][CH3:46])=[C:26]([O:47][CH2:48][CH2:49][CH2:50][CH2:51][CH2:52][CH2:53][CH2:54][CH2:55][CH2:56][CH2:57][CH2:58][CH2:59][CH2:60][CH2:61][CH2:62][CH2:63][CH2:64][CH3:65])[CH:25]=2)[CH:74]=1
Reactant: CCCCCCCCCCCCCCCCCCOc1cc(CCl)cc(OCCCCCCCCCCCCCCCCCC)c1OCCCCCCCCCCCCCCCCCC
Reactant: COc1ccc(C=O)c(O)c1
Agent: O=C([O-])[O-]
Agent: [K+]
Solvent: ClC(Cl)Cl
Solvent: CN(C)C=O
Product: CCCCCCCCCCCCCCCCCCOc1cc(COc2cc(OC)ccc2C=O)cc(OCCCCCCCCCCCCCCCCCC)c1OCCCCCCCCCCCCCCCCCC
Temperature: 80 °C
Reaction time: 8 h
Yield: 98 %

Procedure:
3,4,5-Tris(octadecyloxy)benzyl alcohol (83.0 g, 90.8 mmol) was dissolved in chloroform (830 ml), thionyl chloride (21.6 g, 0.182 mol) was added at 0° C., and the mixture was stirred at room temperature for 1.5 hr. The solvent was evaporated, and the residue was precipitated with acetonitrile (800 ml) to give 3,4,5-tri(octadecyloxy)benzylchloride (93.6 g) as wet crystals. (ii) 3,4,5-Tri(octadecyloxy)benzylchloride (93.6 g, wet, <90.8 mmol), 2-hydroxy-4-methoxybenzaldehyde (15.2 g, 0.10 mol) and potassium carbonate (31.4 g, 0.23 mol) were suspended in DMF (830 ml), and the suspension was stirred at 80° C. overnight. The reaction mixture was dissolved in chloroform (1600 ml), and the mixture was washed 3 times with 1N hydrochloric acid (800 ml), once with 5% aqueous sodium hydrogen carbonate solution (800 ml), and once with 20% brine (800 ml). The solvent was evaporated, and the residue was precipitated with methanol (800 ml) and washed with acetonitrile (800 ml) to give 4-methoxy-2-[3′,4′,5′-tris(octadecyloxy)benzyloxy]benzaldehyde (93.5 g, 89.2 mmol, 98%). (iii) 4-Methoxy-2-[3′,4′,5′-tris(octadecyloxy)benzyloxy]benzaldehyde (93.5 g, 89.2 mmol) was dissolved in THF-methanol (1870 ml+94 ml), and sodium borohydride (4.05 g, 107 mmol) was added at 0° C. After stirring at room temperature for 1.5 hr, 0.2N hydrochloric acid (100 ml) was added at 0° C. to quench the reaction. The solvent was evaporated to about half, and dissolved in chloroform (2400 ml). The mixture was washed twice with 0.1N hydrochloric acid (1200 ml), once with 5% aqueous sodium hydrogen carbonate solution (1200 ml), and once with 20% brine (1200 ml). The solvent was evaporated, and the residue was precipitated with methanol (900 ml) and washed with acetonitrile to give 4-methoxy-2-[3′,4′,5′-tris(octadecyloxy)benzyloxy]benzyl alcohol (92.4 g, 88.0 mmol, 97% yield vs 3,4,5-tris(octadecyloxy)benzyl alcohol).