in diethyl ether; toluene i-PrMgBr in diethyl ether is added dropwise to well-stirred and refluxing toluene, suspn. is cooled to room temp., anhydrous AlCl3 is added, stirred at room temp. overnight; ppt. is centrifuged, vac. distn.;
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Russell, Glen A.; Ngoviwatchai, Preecha; Tashtoush, Hasan I.
Organometallics, 1988 , vol. 7, p. 696 - 702
Oliverio; Bargellini
Gazzetta Chimica Italiana, 1948 , vol. 78, p. 386,394
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Bargellini; Oliverio
Chemische Berichte, 1942 , vol. 75, p. 2083,2086