Titanocene-catalyzed formation of allylsilanes from allyl ethers and chlorosilanes
作者:Shinsuke Nii、Jun Terao、Nobuaki Kambe
DOI:10.1016/j.tetlet.2003.12.101
日期:2004.2
A new method for silylation of allyl ethers with chlorosilanes has been developed by the use of Cp2TiCl2 as a catalyst. This reaction proceeds efficiently at −20 °C in THF using nBuMgCl. A plausible reaction pathway via allyltitanocene intermediate was proposed.
Appealing to Good Students in Introductory Economics
作者:Elizabeth J. Jensen、Ann L. Owen
DOI:10.1080/00220480309595225
日期:2003.1
The authors examine the effectiveness of different teaching techniques using a unique data set that allows them to match student and instructor characteristics to assess their impact on students' interest in economics. They find that devoting less class time to lecture and more to discussion is effective for all types of students. However, the magnitude of the effects of these two techniques varies considerably by type of student, as does the impact of several other teaching techniques. They conclude that using a variety of teaching techniques is the most successful strategy to appeal to the broad range of learning styles adopted by "good" students.