Multi-step reaction with 11 steps
1.1: 97 percent / NaH / 1,2-dimethoxy-ethane / 0 - 20 °C
2.1: (COCl)2; DMSO, Et3N / CH2Cl2 / -78 - 0 °C
3.1: CuI / diethyl ether / -78 - 0 °C
4.1: 96 percent / (COCl)2; DMSO; Et3N / -78 - 0 °C
5.1: 95 percent / BuLi / -40 - 0 °C
6.1: 9-BBN / tetrahydrofuran / 16 h / 0 - 20 °C
6.2: hydrogen peroxide; aq. sodium acetate / ethanol / 6 h / 0 - 20 °C
7.1: 80 percent / Dess-Martin periodinane / CH2Cl2 / 20 °C
8.1: 84 percent / t-BuOK / tetrahydrofuran / -78 - 0 °C
9.1: 87 percent / H2 / Rh-Al2O3 / ethyl acetate / 20 °C
10.1: DIBAL / CH2Cl2 / -78 °C
10.2: 90 percent / NaBH4 / ethanol / 0 °C
11.1: 82 percent / NaH / dimethylformamide / -20 °C
With
copper(l) iodide; 9-borabicyclo[3.3.1]nonane dimer; n-butyllithium; oxalyl dichloride; potassium tert-butylate; hydrogen; sodium hydride; diisobutylaluminium hydride; Dess-Martin periodane; dimethyl sulfoxide; triethylamine;
rhodium on alumina;
In
tetrahydrofuran; 1,2-dimethoxyethane; diethyl ether; dichloromethane; ethyl acetate; N,N-dimethyl-formamide;
2.1: Swern oxidation / 5.1: Wittig reaction / 8.1: Horner-Emmons reaction;
DOI:10.1021/ol006905z