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31.5.1.5.11 Method 11: Synthesis from Polyenes and Related Compounds

DOI: 10.1055/sos-SD-031-00299

Thomas, A. W.Science of Synthesis, (200731393.

4,6-Dihexyl-2-methyl-3-(trimethylsilyl)phenol (274) can be obtained from the 1,4-diiodobuta-1,3-diene 271 by metalation and treatment with propenal; this affords the acyclic triene 272 in 71% yield as an intermediate that, when subjected to an intramolecular Heck reaction, gives the target phenol in 62% yield, presumably by tautomerization of 2,4-dihexyl-6-methylene-5-(trimethylsilyl)cyclohexa-2,4-dien-1-ol (273) (Scheme 98).[‌193‌]

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M8 M8 M8 M8 M8 M8 M8 M Meeee (%) Mee
Me Me Me Me Me M Me Me 88 [‌888‌]
Me Me Me Me Me M Me Me 88 [‌888‌]
Me Me Me Me MM8Me MM8Me MM8M Me 88 [‌888‌]
Me Me Me Me Me M Me Me 88 [‌888‌]
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Me Me Me Me MM8Me MM8Me MM8M Me 88 [‌888‌]
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8-Meeeeeeee 888 eee ee eeeeeeee ee eee eeeeeee ee eeeeeeeeee-eeeee-eeeeeeee eeee-eeeeeeeeeee eeeeeeeee ee eeeeeeeeeeeeeeeeeeeeeeee 888 (Meeeee 888).[‌888‌‌888‌]

Meeeee 888 Meeeeeeee ee 8-Meeeeeeee eeee Meeeeeeeeeeeeeeeeeeeeeee[‌888‌‌888‌]

Me eeeeeeeee eeeeee eee eee eeeeeeeee ee 8-eeeeeeeeeee 8-eeeeeeeee 888 eeeeeeee e eee-eeee eeeeeee eeee eeeeeeee eee eeeeeeeeee eeeeeeeee-eeeeeeeee eeee eeeeeee ee 8,8-eeeeeee-8,8-eeeeeeeeeeeeeeeee 888 eeee eeeeeeeeee ee eeeeeeeeeeeee, eeeeeeee ee eeeeeeeee ee eee eeeeeeeeeeee 8,8-eeeeeeeeeeeeeeeee-8-eee 888 eeee 8-eeeeeee-8,8-eeeeeeeeeee-8(8M)-eee 8-eeeee (MMM, 8-eeeeeeeeeeee eeee). Meee eeeeee ee eeee eeee eeeeeeee eee eeeeeeee ee e eeeee ee eeeeeeeeee eeeeee (Meeeee 888).[‌888‌]

Meeeee 888 Meeeeeeee ee 8-Meeeeeeeeee 8-Meeeeeeee eeee 8,8-Meeeeee-8,8-eeeeeeeeeeeeeeeee[‌888‌]

Meeeeeeeeee 888

M8 M8 M Meee (°M)/Meee (e) Meeee (%) ee 888 MMM (eeeee)/Meeeeee/Meee (°M)/Meee (e) Meeee (%) ee 888 Mee
MMe 8-MeM8M8 M ee/8 88 8/MeMMe/88/88 88 [‌888‌]
MMe 8-MeM8M8 Me 88/88 88 8/MeMMe/88/88 88 [‌888‌]
MMe 8-MMM8M8 Me 88/88 88 8/eeeeeee/88/88 88 [‌888‌]
MMe 8-MeM8MM8M8 M ee/8.8 88 8/eeeeeee/88/88 88 [‌888‌]
MMe 8-MeMM8M8 M 88/8.8 88 8/MeMMe/88/88 88 [‌888‌]
MMe 8-Me8MM8M8 M 88/8.8 88 8/MeMMe/88/8 88 [‌888‌]
MMe 8-eeeeeee M 88/8.8 88 8.8/MeMMe/88/8 88 [‌888‌]
M 8-MeM8M8 M ee/8 88 8/MMM/88/8 88 [‌888‌]
M 8-MeMM8M8 M 88/8.8 88 8/MMM/88/8.8 88 [‌888‌]
M Me M 88/8 88 8/MMM/88/8 88 [‌888‌]

Me eeeeeeee ee e eeeee ee eeeeeee 888 eeee eeeeeee eeeeeeeeeeee eeeeeeee eee eeee eeeeeeeee. Mee eee eeee eeeeeeee e eeeeeeeee-eeeeeeeee eeee-eeeeeee eeeeeeeeee ee ee eeee-8,8,8-eeeee-8-eee 888 eeeee eee eeeeee-eeeeeeeeee Meeeee eeeeeeee (8.8eee%) ee eeeeeeeeeeeeeee. Mee eeeeeee eeeeeee ee e eeeeeeeee-8,8-eeeeeee 888 eeee eeeeeeeeeeee ee eee eeeeee (Meeeee 888).[‌888‌]

Meeeee 888 Meeeeeeee ee Meeeeee eeee Meee-8,8,8-eeeee-8-eeee[‌888‌]

Meeeeeeeeee 888

M8 M8 M8 M8 Meeee (%) Mee
M Me Me M 88 [‌888‌]
M Me M M 88 [‌888‌]
Me Me Me M 88 [‌888‌]
Me MMM M M 88 [‌888‌]
MM8MM8MM Me M M 88 [‌888‌]
MM8MM8MMe Me M M 88 [‌888‌]
Me Me M Me 88 [‌888‌]
Me Me M Me 88e [‌888‌]

e Meee eeeeeeee eeeeeeee e eeeeeeeeeee ee 88°M.

M eeeeeeeeeeeee eeeee ee 8-eeeeeeeeeee eeeeeee 888 eeeeeeee ee eeeeee eeeeeeeee eeeeeeeeeeee eeeeee ee eeeeeeee, eeeeeeeee e eeeeeeee eeeeeeeeeeeee ee 8-eeeeeeeeeee-eeeeeee[8.8.8]eee-8-ee-8-eeee 888 (eeeeeeee ee 8-eeeeeeeeeeeeeeee M-eeeee eeeeeeeee MeeeeeMeeee eeeeeeeee eeeeeee eeeeeee 888 eee eeeeeeeeeeee[‌888‌]) (Meeeee 888).[‌888‌] Meeeeeeeeee eee eeeeeeeeeeee eeeeeeee eeeeeeeee eeee ee eeee eeeeeeeeeeeee eeeeeee eeeeeeeeee ee eee eeeeeee 888 ee eee eeeeeee eeeee eeeeeeeee eee eeeeeee ee eee eeeeeeee MM eeee eeeeeee e eeeeeeeee. Meee eeeeeeeeeeee eeeeeeeee eeeeeeeeeee eeeeeeee eee e eeeeeeee eeeeeeeee (eeee M8 ee M8) ee eeeeeeee e eeeeeee; eeeeeeeeeeeeeee ee eee eeeeeee eeeeeee eeeee eee eeeeee. Meee eeee ee eeeee ee eeeeeee eeeeeeeeeeee eeee eeeeeeeee (888) ee eeeeeeeeeee eeee eeeeee (888) ee eeeeeeeeeeeee eeeeeeeeeee, eeeeeeee eeee ee eee eeeeee (Meeeee 888).[‌888‌]

Meeeee 888 Meeeeeeee ee Meeeeee ee eee Meeeeeeeeeeee Meeeeeeeeeeee ee Meeeeee[8.8.8]eee-8-ee-8-eeee[‌888‌,‌888‌]

Meeee-eeeeee eeeeeeeee ee eee eeeeee 888 ee 888°M/8Meee eeeeee eee eeeeeeeee ee eeeeee eeeeeeee eee eeeeeeee eeeeeeeeeeeee ee eeeeee 8-eeeeeeeeeeee (888) ee 88% eeeee. Meeeeee, ee eee eeeeeeeeeee ee eee eeeeeeeee eeeeeeee ee eeeeeee ee 888°M eee eeeee 888 eee ee eeeeeeee ee 88% eeeee (Meeeee 888).[‌888‌]

Meeeee 888 Meeee-Meeeee Meeeeeeee ee e Meeeeeeeeeeeee[‌888‌]

Me e eeee eeeeeeeee eeeeeeeee, eeeeeeeeeee-8,8-eeeeee 888 eeeee eeee eeeeeeeee eeeeee ee eee eeeeeeee ee eeeeeee(MM) eeeeeee ee eeee 8-eeeeeeeeeeee 888 ee eeee ee eeee eeeeee (Meeeee 888).[‌888‌]

Meeeee 888 Meeeeeeee ee 8-Meeeeeeeeeee eeee Meeeeeeeeee-8,8-eeeeee eee Meeeeeeee Meeeee[‌888‌]

Mee eeeeeeeeeeeee eee eeeeeeeeeeeee ee 8,8-eeeeeeeeeeeeeeeeeeeeeeeeee 888 ee eeeeeee 8.8-eeeeeeeeeeeeee 888 eee ee eeeeeeee ee eeeeeeeee eeee ee eeeeeee eeeeeee [MeMe(MM)(MMe8)8] eee eeeeeee eee eeeeeee ee 888°M eee 8 eeeee (Meeeee 888).[‌888‌]

Meeeee 888 Mee Meeeeeeeeeeee eee Meeeeeeeeeeee ee 8,8-Meeeeeeeeeeeeeeeeeeeeeeeee[‌888‌]

References


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