224442-03-9

Upstream product

• 109-72-8 n-butyllithium 
• 86-73-7 9H-fluorene 
• 224442-04-0 (2,4,6-tri-tert-butylphenyl)P=C(Cl)Ge(Cl)(mesityl)Cl 

Downstream Products

• 224442-05-1 (2,4,6-tri-tert-butylphenyl)P=C(Cl)Ge(n-Bu)(mesityl)(fluorenyl) 
• 224442-09-5 (2,4,6-tri-tert-butylphenyl)P=C(Cl)Ge(Cl)(mesityl)(C₁₄H₁₁) 

Relevant academic research and scientific papers

From a Transient 3-Germa-1-phosphabutadiene to a 1,2-Bis(phosphaalkenyl)-1,2-digermacyclobutane

Dehydrofluorination of the fluoro(fluorenyl)(phosphaalkenyl)germane 7 by tert-butyllithium in the presence of chlorotrimethylsilane affords the 1,2-bis(phosphaalkenyl)-1,2-digermacyclobutane 2. This reaction probably involves the prior formation of the transient 3-germa-1-phosphabutadiene 1, followed by its head-to-head dimerization. 2 contains a distorted four-membered ring with long intracyclic Ge-Ge (2.5567(8) ?), Ge-C(R2) (2.058(4) ?), and (R2)C-C(R2) (1.592(6) ?) bonds; mesityl groups are trans in relation to this heterocycle.