The iron‐catalyzed δ‐addition of aryl‐Grignard reagents to α,β,γ,δ‐unsaturated sulfones proceeded in a regio‐ and stereoselective manner to give cis‐4‐aryl‐2‐alkenyl sulfones. Allylic alkylation of the resultant products was performed without isomerization of the cis‐olefin to give cis‐4‐aryl‐1,1‐dialkyl‐2‐alkenyl sulfones, which upon intramolecular Friedel–Crafts reaction with aluminum chloride gave 1,4‐dihydronaphthalenes having a quaternary carbon center.

Ultrasound measures of back fat thickness (UBF), eye muscle area (UEMA) and marbling score (UMS) and carcass measures of carcass weight (CW), backfat thickness (BF), eye muscle area (EMA) and marbling score (MS) were available on 26,129 Hanwoo steers. Statistically significant differences by regions of the farms location and birth years-seasons for the steers taken ultrasound measures and their carcass measures (p<0.01) were found. Steers in Gyeonggi province showed the highest values in ultrasound measures and carcass traits except in BF compared to steers in the other provinces. Comparing between ultrasound and carcass measures, UBF was thicker in general than BF in all regions except in Daejeon city. UEMA was higher than EMA in all regions except in Gyeonggior in Jeju provinces. Especially, the difference in Jeonnam province between UEMA and EMA was 7㎠ while the differences between UMS and MS ranged from 0.9 to 2.26 depending on the regions of steers located. Steers born in spring showed greater ultrasound or carcass values than those born in autumn. However, carcass measures of steers born in autumn were greater than those born in spring, 2009 except MS. The pearson and residual correlations were 0.63 and 0.65 between UBF and BF, 0.31 and 0.32 between UEMA and EMA and 0.56 and 0.56 between UMS and MS, respectively.

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Optimized conditions are developed for sequential selective debenzylation, cyclization and hydrolysis to afford N‐substituted butyrolactams from easily available substrates.

Iron-Catalyzed Regio-and Stereoselective Conjugate Addition of Aryl-GrignardReagents to α,β,γ,δ-Unsaturated Sulfones and Its Synthetic Application. -An Fe(II)-catalyzed selective δ-addition of aryl-Grignard reagents to α,β,γ,δ-unsaturated sulfones (I) is presented. Subsequent alkylation at the α-position can be achieved by addition of alkyl halides prior to work up. Moreover, the synthetic utility of products such as (VIa) is demonstrated by conversion to dihydronaphthalene (VIII). -(HATA, T.; NAKADA, T.; OH, Y. T.; HIRONE, N.; URABE*, H.; Adv. Synth. Catal. 355 (2013) 9, 1736-1740, http://dx.doi.org/10.1002/adsc.201201124 ; Dep. Biomol. Eng., Tokyo Inst. Technol., Kanagawa 226, Japan; Eng.) -Mais 45-048