The chiral 6,7-dimethoxytetralin-Cr(CO)
3 derivative
rac-
10, containing both a ketone and an olefin sidechain, was prepared from
rac-
4 through a sequence of two successive benzylic ...deprotonation/alkylation steps. On treatment with samarium(II)iodide,
rac-
10 selectively cyclized to the mono-demethoxylated hydrophenalene-Cr(CO)
3 derivative
rac-
11, a highly functionalized precursor for the synthesis of antiinflammatory pseudopterosins. This result displays the synthetic power of intramolecular radical additions to arene-Cr(CO)
3 complexes followed by single electron transfer (SET).
Treatment of complex
rac-
10 with samarium(II)iodide in the presence of HMPA and
t-BuOH gives, after aqueous workup, the mono-demethoxylated cyclization product
rac-
11 with excellent regio- and diastereoselectivity.
Economists have studied the integration of financial markets for quite some time, but have not yet reached a definite conclusion on the status of this phenomenon. By using global financial data to ...predict local macroeconomic growth, tests of market integration and segmentation are developed that combine the pricing and quantity perspective of previous research. If markets are fully integrated and industry earnings growth is the same across countries, local and global PE ratios should move together and contain the same information about an industry's growth opportunities. For developed and emerging market countries with open capital accounts, local and global PE ratios seem to contain the same information with respect to a country's future economic performance.
What are the origins of individual savings behavior? Using data on identical and fraternal twins matched with data on their savings behavior, we find that an individual's savings propensity is ...governed by both genetic predispositions, social transmission from parents to their children, and gene-environment interplay where certain environments moderate genetic influences. Genetic variation explains about 35 percent of the variation in savings rates across individuals, and this genetic effect is stronger in less constraining, high socioeconomic status environments. Parent-child transmission influences savings for young individuals and those who grew up in a family environment with less competition for parental resources. Individual-specific life experiences is a very important explanation for behavior in the savings domain, and strongest in urban communities. In a world progressing rapidly towards individual retirement savings autonomy, understanding the origins of individuals' savings behavior are of key importance to economists as well as policy makers.
Nicht nur signifikante Enantioselektivitäten, sondern auch noch deutlich höhere chemische Ausbeuten als mit achiralen Katalysatoren ergab die asymmetrische Variante der übergangsmetallkatalysierten ...Cyclisierung von Diazoketonen wie 1. Die bei der Funktionalisierung von Benzolderivaten bewährte Carbenchemie wurde hier erstmals auf Ferrocene übertragen.
Using data on identical and fraternal twins' complete financial portfolios, we decompose the crosssectional variation in investor behavior. We find that a genetic factor explains about one third of ...the variance in stock market participation and asset allocation. Family environment has an effect on the behavior of young individuals, but this effect is not long-lasting and disappears as an individual gains experiences. Frequent contact among twins results in similar investment behavior beyond a genetic factor. Twins who grew up in different environments still display similar investment behavior. Our interpretation of a genetic component of the decision to invest in the stock market is that there are innate differences in factors affecting effective stock market participation costs. We attribute the genetic component of asset allocation - the relative amount invested in equities and the portfolio volatility - to genetic variation in risk preferences.
Nicht nur signifikante Enantioselektivitäten
, sondern auch noch deutlich höhere chemische Ausbeuten als mit achiralen Katalysatoren ergab die asymmetrische Variante der übergangsmetallkatalysierten ...Cyclisierung von Diazoketonen wie
1
. Die bei der Funktionalisierung von Benzolderivaten bewährte Carbenchemie wurde hier erstmals auf Ferrocene übertragen.
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