A synthesis of tricyclo[3.3.0.03,7]Octane (bisnoradamantane); solvolysis of its mono and dicarbinols

K[Al4(PPh2)7PPh]: An AlII Phosphanide / Phosphinidene Intermediate on the Path to AlP Formation

“…Each [Al 4 (PPh 2 ) 7 PPh] -unit contains two Al-Al pairs, three bridging diphenylphosphanide ligands, four terminal diphenylphosphanide ligands, and one terminal phenylphosphinidene ligand. The idealized (AlP) 4 P 4 core comprises four fused cyclopentane-like rings with a bis-noradamantane structure [12] and has virtual D 2d point symmetry ( Figure 1). The ring structure is reminiscent of the P 4 Al 6 adamantane-like core in P 4 (AlCp*) 6 and the Ga 4 P 10 core in Ga 16 (PtBu 2 ) 10 that contains an inverse P 4 O 10 structure.…”

Nonconjugated Hydrocarbons as Rigid‐Linear Motifs: Isosteres for Material Sciences and Bioorganic and Medicinal Chemistry

“…In addition, the chemistry of trishomocubane is underdeveloped, again limiting its use. Additionally, bisnoradamantane 341 , while non‐linear, affords four equivalent bridgeheads offering unique opportunities to be used as a rigid hydrocarbon scaffold …”

Dehalogenation of 1,3‐Diiodotricyclo[3.3.0.03,7]octane: Generation of 1,3‐Dehydrotricyclo[3.3.0.03,7]octane, a 2,5‐Methano‐Bridged [2.2.1]Propellane

“…The identity of the stereoisomers of 15 was established by comparison of their mass spectra with those of the described compounds. [12] The identity of compound 14 was established by comparison of its mass spectrum with that of an authentic sample prepared by a modification of a known procedure, [11] as described later on. All of the remaining compounds were isolated as follows.…”

“…Moreover, the formation of the known products 14 [11] and meso-and dl-15 [12] was detected by GC-MS analysis. To secure the structure of 14, it was prepared by reduction of (AE )-8 with Li/tBuOH.…”

“…, UB3LYP/6-31G(d); 10.2 kcal mol À1 , UMP2/6-31G(d)] than the highly pyramidalized tricyclo [3.3.0.0 3,7 ]oct-1(5)-ene (11), a very reactive intermediate already generated by our group by de-A C H T U N G T R E N N U N G iodination of compound 10 (Scheme 1). [7b, 9] Keywords: dehalogenation · den-…”