Bridged ferrocenes. 13. Preparation and properties of derivatives with .beta.-oxatrimethylene bridges

Highly Enantioselective One-Pot Synthesis of Chiral Tri- and Tetrasubstituted Ferrocenes from 1,1′-Ferrocenedicarbaldehyde

“…(R,R)-8 was prepared in 44 % yield by a modification of the procedure described by Hillman et al [18] Organomagnesium reagents are extremely important in synthetic organic chemistry. Since their discovery, there has great interest in these versatile reagents, and numerous industrial applications have been reported.…”

“…[17] Reduction of 5 with an excess of NaBH 4 gave the diol 7 (71 % yield). By means of a procedure described by Hillman et al and modified by us, [18] 7 was dehydrated with tosyl chloride (TsCl) in toluene in the presence of 4 molecular sieves at 50 8C. [19] The (R,R)-bis(trimethyl- Figure 1.…”

A Simple New Structural Force Field for the Computation of Linear Metallocenes

“…CpϪPropϪCp FICJUW [47] (CpϪMe) 2 ϪO FICKAD [47] (CpϪMe) 2 ϪS FICKEH [47] The structural data considered in this study included…”

“…The relevant (sym.) CpϪ1,2-Prop 2 ϪCp YUMRAZ [54] structures (46 data sets; 34 Fe, 10 Ru, 2 Os), separated into CpϪ1,2-Prop 2 ϪCp FICKIL [47] simple and strapped sandwich compounds, are presented in CpϪ1,3-Prop 2 ϪCp TRMEFE01 [47] (Cyp)CpϪ1,2-TTMFER [55] Table 1.…”

“…CpϪ1,2-FICKORH [47] (Prop)(MeϪOϪMe)ϪCp CpϪ1,3-FICLAE [47] Structural Parameters (Prop)(MeϪOϪMe)ϪCp CpϪ1,2-Bu 2 ϪCp COBSAN [56] CpϪ1,3-Bu 2 ϪCp PEFGAI [57] The structural parameters considered here (average met-…”