DAST is one of the most important fluorinating agents in this century. This paper has summarized the recent advances in the formation of C-F bond by DAST.

DAST试剂是本世纪开发的最重要的氟化试剂之一，本文综述了利用该试剂形成碳-氟键的新进展。

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A C-F cleavage reaction was found when using ortho-fluoro substituted benzonitrile, which resulted in the formation of new C-C bond.

发现该反应在以邻位氟取代的苯睛为底物的情况下，碳-氟键可以被打断并有效地形成碳-碳键。

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Moreover, it is a main reason for the formation of some exogenic deposits like As-high, F-high, s-high or Hg-high coal.

再者它是外生矿床——高砷煤、高氟煤、高硫煤、高汞煤形成的主要原因。

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The chart of the November crude oil contract shows that prices are reaching the apex of its flag formation, lines f and g.

FORBES: Key Levels to Watch

Over the next three months, DIA formed a flag formation, lines e and f.

FORBES: Unlocking Chart Secrets with Volume

The completion of the short-term triangle formation (lines e and f) last week was accompanied by strong volume.

FORBES: 2 Ways to Buy More Gold for 2013