SINGAPORE -(Dow Jones)- Alibaba Group Holdings Ltd. is in talks with Singapore state investment company Temasek Holdings Pte. Ltd. to help it finance a $7.1 billion purchase of its shares from Yahoo Inc. (YHOO), people familiar with the situation said Monday. Temasek may provide about $500 million if the negotiations are successful, these people said. Late Sunday, Yahoo struck a deal under which it will sell up to half of its 40% stake in Alibaba in a taxable transaction. People familiar with the situation said that the deal would comprise $6.3 billion in cash and around $800 million in Alibaba preferred stock. Last year, people familiar with the situation said Temasek had an investment of between $300 million and $400 million in Alibaba, which operates China's largest e-commerce website. -By P.R. Venkat, Dow Jones Newswires; +65 64154 152; venkat.pr@dowjones.com