With strong bases under ultrasonication and phase - transfer catalysis, the reaction of 7, 7 -dihalocarane and haloform can generate halogen exchanges.

在强碱条件下，用超声辐射并使用相转移催化剂，二卤降蒈与卤仿反应发生卤素交换。

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The Obama administration says it looks forward to working closely and maintaining a strong alliance with the next Japanese government, but that it is ruling out any renegotiation of the bases agreement that was finalized earlier this year.

VOA: standard.2009.08.31

Office manager Kathy Door, said the corps currently serves about 9, 900 boys in 550 clubs in the U.S. and Canada, with strong bases of support in Michigan, Illinois, Iowa and the Pacific Coast.

WSJ: Amid Boy Scout turmoil, other groups hope to grow

Groupon and other incumbents have built strong user bases, however, the quality of their audience has yet to be proven in terms of long-term ROI for advertisers.

FORBES: Online Group Buying's Need For Speed

Strong and devoted fan bases in Boston and New York look for championships above all else.

FORBES: Magazine Article